Thanks for having me Barry! Enjoyed working with you! To shed a bit of light on the straight-line difference, I definitely got greedy carrying speed into T11 and T20, which showed in the higher minimum speed, but I was late to the gas, and that cost us in the straights. Looking forward to next time to see if I can learn COTA a bit more and squeeze more pace out of your beast!
I definitely know there's a 16 in this thing and I'm not likely the guy that will find it but I'm sure you could! The invitation is always on the table and cool air will make a huge difference. It's interesting to note that Felix in the 992 GT3 RS with R7s put down a 2:15.80 and with the 991 GT2 RS on Hankook slicks he put down a 2:14.0 so this little 4RS is right in the hunt.
This 25min video packs so much info in it and I had to finish it in two stints! Great job with the comparative analysis. You’re showing a great example of how us amateur drivers could learn car setup and driving techniques through data! Congrats 🎉
Absolutely fantastic series of videos. Very well shot, edited and the commentary is excellent (packed full of information). I just picked up a 992 GT3 here in the UK and your videos gave me a lot to chew on. Thank you very much. 👍🏻
In my opinion, Felix is faster on the straights because the slicks give him more traction exiting Turn 11 and Turn 20. Love your videos! So well done! So easy to understand and follow! But where is the video of you driving the new setup? I hope you're liking it. 🙂
Interesting point and thanks for the positive feedback on the content! The video of me driving the new setup is in the queue... and yes I liked it a lot.
Exactly! A drill down on the data should confirm this but my impression is that Felix is setting up the corners before the long straights really well and the slicks are allowing him to go to throttle earlier resulting in higher V-Max on the straight. Fun analysis guys!
Agreed. Be cool to see an RS with similar mods. Cause if I remember Cameron took Ray's Dundon equipped 992 GT3 manual down into the low 2:14s on 19" pirelli DHB slicks
You need to also account for the significant braking performance that the slicks add. They can afford to keep going on the straights due to shorter braking zones and resulting in higher vmax.
Fantastic content from you as always ! Very satisfying and interesting to watch, I am personally racing 93 Civic EG with K24 in it, but still find your videos absolutely amazing ✌🏻 I really think that Randy can do high 2.15 lap easily, because car is very stable in high speed sections.
Thank you for the positive feedback and great to hear that drivers outside of the 4RS community are also finding the content useful! If Randy pulls off a high 2:15 I would be elated.
Love these videos. Track limits allowed some serious speed on t19 for Ted, if he kept it within the line like Randy the min speed would have been much less. Either way, solid driving all around. Excited to be out there with you guys this upcoming year.
Thank you! Ted had a higher speed on T19 but paid for it with a much longer line. In the end I think it was a wash at best. Look forward to meeting you if you make it out to Cota!
Felix's setup for all the straights, front, back, T9 to T10/11 are always very good and he gives up some vMIN at apex (a .05 here or there) to optimize the straights, which to me explains the higher vMAX on the straight, T9, etc, along with the other things you mentioned. Great laps from all 3 drivers, always different ways to improve lap times (aero, power, tire) by changing the cars but the driver who can find the limit of the platform and stay there is always the fastest, Felix does a really really good job of that in my observation. I enjoyed your video and appreciate it, thank you!
Awesome content & good to see the mods worked. I like the trying to make the car easier to drive. I have a Honda EP3 K24 that I have been making small changes to get faster. Each change has improved laptime at my local track. In NZ the car is difficult to upgrade suspension & still stay compliant & legal to drive on public roads so may be at the end of how far I can go.
Damn, I love this series your GT4RS is hooked up!! What was the max G’s seen with the Hoosiers? Also the difference in speed into turn 1 could be cause the difference in speed at the last turn? …as always I appreciate you sharing all the data and details, some ppl are not so open.
Love the data analysis and the walk through. The exhaust package from Dundon may also play a part in why there was such a small difference in end of straight speeds even with aero drag with bigger Dundon wing and more downforce. Example: Turn 20 exit Randy 71mph and Ted 72 mph. By end of rumble strip, Randy was 86mph while Ted was at 90mph. Is this 4 mph advantage due to more power with Dundon Exhaust? This advantage slowly goes away by end of straight to only 2mph. At turn 9, both Randy and Ted get on gas prior to apex. Randy was already at 65mph while Ted was at 60mph when they get on the gas. By the time they crest the apex hump, they are going at the same speed. Ted makes up 5mph very quickly. More power and better damping over bump? Probably both. At Turn 11, Randy exits the corner at 83mph and Ted at 82mph. About 1/3 down the straight, Randy is at 116mph and Ted 118mph. Again at lower speeds it looks like Ted can make up speed due to more power. Around 130mph, it looks like there is a crossover. Even with more power, Ted can no longer keep the speed advantage. Drag QUADRUPLES with a doubling of speed. That being said, only being 2mph slower at the end of the straight is a fantastic accomplishment. Kudos to the guys at Dundon for making a nice total package. Can't wait to see Randy drive your car!
Hey Ealing! I believe you are correct, the increased drag might be over come by the added power from the exhaust changes but at lower speed, less drag, it just turns into a power advantage. I definitely feel the added stability over the curbs with MCS. For example, I'm now able to jump the curb at T3 which opens up a new line for me. I'll dive into that topic in the next video.
The driver is a huge piece of the puzzle but you have to ask yourself if you could take on the load that you see Randy carrying. If not then is there a set of mods that will improve the cars behavior so you are in a better environment to learn. I believe MCS is one such mod.
@@ItsTrackTime Agree! At most skill levels, there is going to be extra performance available from the mods. Similarly, for a given vehicle configuration, there’s performance to be had with developing the driver. Of course, going faster with the same car is arguably a riskier proposition - spending more time at the limit!
Interesting analysis for sure. I'd also like to see how the repaved asphalt and fresh tires came into play, but realize that will be very hard to analyze at this point, and you had to try and compare as close to apples-to-apples as you could, which is always near impossible given track conditions, weather, etc. Looking forward to seeing your laps. I'm betting you may see a 2-3 delta from your best laps, BUT betting you will 'feel' more in control and stable, which in turn will lead to the faster laps. Nice job Barry
Thank you! The pavement changes were not a big factor, only the turn 1 apex had an advantage, and both Ted and Randy were on R7s although a couple heat cycles apart. Randy will be back and he will have a set of stickers next time. The video of my laps is in the works...
@@ItsTrackTime Awesome! I am hoping to get out to COTA sometime in 2025, been on the bucket list for a while. Bit challenging to make the trip from FL, though we are trying to plan a trip maybe next Spring. Would definitely let you know when our group comes out, would love to see you guys out there and in-person.
@ You won’t be disappointed, the track is lots of fun! Located nearby, world’s largest motorcycle museum and Motorsports museum, bucees, bass pro, shopping mall, and local restaurants such as Saws BBQ. Our headquarters/shop is 7 mins from the track as well 🏎️💨😁
I have a GT4 RS Clubsport. You should run on slick Michelin to strike 2'16 or 2'15. This is going to change your car on another level (Pirelli, Hankook or any other tyres are not good). Have fun.
I'm still running on 20" wheels so there are no slick options but I have been looking at the 4RS Clubsport recently. How do you like yours? Any must have options?
So, I think y’all may be losing a good deal of the time in the carousel with the line everyone is taking. From talking to Andreas and Cameron, the entry is more left and deeper before the turn and holding throttle until the walk bridge rather than hugging closer to the right side. At the halfway point to T19, I think Ted is following the curve of the right edge of the track. I think the faster line swinging out further left to build more speed. Then, cut to the right and get straight and unloaded before taking the left at T19. By doing this, the car is able to load up better for the turn (do the same at T13). This may add a few feet of extra distance traveled, but the corner exit speed will be higher. The Vmin speed at T19 should be 78+ without even straddling the sausage-btw, doing so is super close to track limits, which will kill a competition lap.
Hey Ray, when are we going to see you out there again? Thanks for the tips! I'll go back and study Cameron's line some more and see how he approached the carousel and T19.
How much of the lap time is from different tires and new track resurfacing? Also hard to tell because 2 different drivers...need to get Randy back in the car
Randy and Ted were both on R7s. Ted's were new, Randy's had 3 heat cycles on them. The repave did three things: 1) Took a bump out of the front straight - Good for driver comfort but not critical for lap times. 2) Took a bump out of the turn 1 apex - This did improve the line. 3) Took the bumps out of the back straight - Good for driver comfort but not critical for lap times. So I don't think that was a big factor. And yes we are going to get Randy back in the car when the weather cools down.
@ Ted’s needed more steering input on corner entry most on of the time. On exit, Ted still needed a good amount of lock, when he should be able to unwind the steering. Corner 19 punished him; and it’s probably the reason the Carousel was compromised as well. But I agree that in general, a slightly understeery car is faster (for most drivers). Good news is that now you have the right mods to play around… have fun!!
@@sgpasian - The big turns at COTA are deceiving. The apex is not where you think it is. These turns are typically wide in and narrow out, which pushes the apex away from the inside corner. If you hug the inside line, you will get pushed out. I think that is what happened to Ted - not understeer.
Did you also install the Dundon 93mm throttle body and plenum? Or just the full exhaust? I didn't see it in your install video so I figured I'd ask. If you didn't do it what was the reasoning? Great videos btw!
Thanks for watching! No, I didn't install the Dundon plenum and larger throttle body. I don't want to make any mods that would cause issues with my warranty.
@@ItsTrackTime Makes sense. Do you know if the full exhaust you have saves any weight at all? I wouldn't think much but usually deleting the OPF helps a bit?
I dare venture to a guess that tires played a role in lap times more than you think. The R7's are more endurance than halo lap speed, but a fresh set vs those Hankook's may be closer than you think. A7's would get you a fast lap or two until they got too hot. Also with Felix on 19's did that effectively change the final drive ratio if the tire diameter was not the same as stock? Just speculating with so many variables. Its really hard to compare unless you run same tire, same day, same driver and then you're literally splitting hairs as it is.
Great points. I believe Felix matched the outer diameter of the slick to the OEM tire size so the drive ratios should have been the same. Do you believe an A7 would be better in cooler temps than an R7?
@@ItsTrackTime From everything I've heard from the Mustang crowd (obvious weight difference), the A7 will come up to temp faster and have more grip for a short time, but tend to cycle out rather quickly. A lot of time trial and autocross guys/gals use them and with your weight and cooler temps, it might cut your time another second if you can manage the temps. Apparently they are finicky and do not like getting hot. But if all you're looking for is that halo lap, they might be the ticket. I'd talk to a Hoosier rep and pick their brain.
I used them years ago one time during the winter and they were sticky right off the bat but beyond that I didn't really notice much difference. The car I was driving back then didn't have a lot of downforce so I was wondering if this Dundon setup would be different. Sounds like you are saying the R7 in the winter would start out slow but wouldn't crap out at the end of the session whereas the A7 would start out fast but would lose grip, even in the winter, before the session completed?
Amazing Video Sir! High V-Max’s may be due to the fact that I am running the car with very little wing. What lap number in the session was Teds Fast Lap? I do feel this car de-rates on continuous hot laps. Only running COTA 93 Octane in the car to be clear.
Thank you! Ted's fastest lap was #9 so the car was very hot. When I looked at the exit speed out of turn 20 I found the following: Felix - 92 mph Ted - 89 mph Randy - 88 mph One explanation, as a prior viewer noted, the slick provides extra grip so it puts the power down better and of course it could just be you had a better exit. Less wing can't explain the corner exit speed difference.
@ Absolutely, that 3mph difference on track out should translate to the top end of the cars. Next step, data system! That way we can see throttle and brake traces.
So much was changed this was basically apples to oranges. It's also not exactly useful to claim that MCS is better than stock. Again the damping is just different and you have the ability to get close to a suitable damping constant for the spring rate you're running. I'll look for you the next time I'm at COTA and say hi.
For me the MCS dampeners are absolutely better. I can now go straight over the curbing and the car stays stable and planted. Looking forward to meeting you next time you're at Cota!
Ted ever heard about track limits? This is not compareable sorry. Stock is pretty much the same speed and way better looking. Upgrade is not worth it, sorry. Especially considering you lose the warranty.
@@997GT3RUSA has the Magnuson-Moss Warranty Act to settle any/all more questions about voiding warranties! However, NOTHING prevents Dealerships from TRYING to bluster someone into thinking it voids warranty. However, not all cars are track worthy, so OBD II will tattel tale like a normal C8 without Z51 and pre-track requirements, but a Camaro with 1LE or Porsche RS are trackable.
It would be really interesting to see Randy back in the car after the mods and the smoother track.
He's coming back! Just need some cool weather.
Thanks for having me Barry! Enjoyed working with you! To shed a bit of light on the straight-line difference, I definitely got greedy carrying speed into T11 and T20, which showed in the higher minimum speed, but I was late to the gas, and that cost us in the straights. Looking forward to next time to see if I can learn COTA a bit more and squeeze more pace out of your beast!
I definitely know there's a 16 in this thing and I'm not likely the guy that will find it but I'm sure you could!
The invitation is always on the table and cool air will make a huge difference.
It's interesting to note that Felix in the 992 GT3 RS with R7s put down a 2:15.80 and with the 991 GT2 RS on Hankook slicks he put down a 2:14.0 so this little 4RS is right in the hunt.
@@ItsTrackTimedon’t forget about Ray Mort in his 992 GT3 Labrat manual at Cota he went 2:15.xx and Cameron Lawrence went 2:14.xx.
Yep, good point Ray had a very fast setup on that car!
This video format is so good! Track day videos can become dull quickly. Great job to the people you work with to make this happen! Excellent work.
Thank you very much.
Great to hear positive feedback like this on our efforts.
The depth of analysis combined with the opportunity to compare three variants of the car is so helpful for learning. Thank you.
Glad to hear you found these types of videos helpful! Feedback like this motivates us to keep creating more.
This 25min video packs so much info in it and I had to finish it in two stints! Great job with the comparative analysis. You’re showing a great example of how us amateur drivers could learn car setup and driving techniques through data! Congrats 🎉
Thank you for your positive feedback and for reinforcing the value this content brings.
Absolutely fantastic series of videos. Very well shot, edited and the commentary is excellent (packed full of information). I just picked up a 992 GT3 here in the UK and your videos gave me a lot to chew on.
Thank you very much. 👍🏻
Great feedback, thank you!
You just picked up one hell of a car, enjoy!!
WOW i love this video style. Thanks for sharing these cool details
Thanks for watching! I hope to keep making these videos.
Nice video! I think part of the better time is because of the new asphalt. I hope you get to see Randy again.
Thank you!
Yes, the track is in very good condition right now. I hope it stays that way for a while so we can enjoy it!
In my opinion, Felix is faster on the straights because the slicks give him more traction exiting Turn 11 and Turn 20. Love your videos! So well done! So easy to understand and follow! But where is the video of you driving the new setup? I hope you're liking it. 🙂
Interesting point and thanks for the positive feedback on the content!
The video of me driving the new setup is in the queue... and yes I liked it a lot.
@@ItsTrackTime Awesome! I look forward to that video. 🙂
Felix also weighs like 155. That weight savings is real.
Exactly! A drill down on the data should confirm this but my impression is that Felix is setting up the corners before the long straights really well and the slicks are allowing him to go to throttle earlier resulting in higher V-Max on the straight.
Fun analysis guys!
Yes
Excellent content and analysis! Keep them coming!
Thank you very much! I enjoy watching your content as well.
Tracklimits!:) Thanks for sharing. Cheers Robin
Ha! Thanks for the visit.
Continuing to enjoy your journey! Great side by side vid comparisons.
Thank you. Great to hear you're finding it useful!
Excellent video and breakdown! Be interesting to see how a similarly modded 992GT3RS would compare.
Thank you!
Felix in the 992 GT3 RS on Hoosier R7s put down a 2:15.80.
Agreed. Be cool to see an RS with similar mods. Cause if I remember Cameron took Ray's Dundon equipped 992 GT3 manual down into the low 2:14s on 19" pirelli DHB slicks
He did a 2:14.25.
Great video, data logging never lies :)
Thank you for watching!
True, "It felt faster" doesn't work for me.
Great Analysis, thank you
My pleasure!
You need to also account for the significant braking performance that the slicks add. They can afford to keep going on the straights due to shorter braking zones and resulting in higher vmax.
True, braking is much butter with slicks. I know the ABS kicks in much later under braking with slicks.
Fantastic content from you as always ! Very satisfying and interesting to watch, I am personally racing 93 Civic EG with K24 in it, but still find your videos absolutely amazing ✌🏻 I really think that Randy can do high 2.15 lap easily, because car is very stable in high speed sections.
Thank you for the positive feedback and great to hear that drivers outside of the 4RS community are also finding the content useful!
If Randy pulls off a high 2:15 I would be elated.
Love these videos. Track limits allowed some serious speed on t19 for Ted, if he kept it within the line like Randy the min speed would have been much less. Either way, solid driving all around. Excited to be out there with you guys this upcoming year.
Thank you!
Ted had a higher speed on T19 but paid for it with a much longer line. In the end I think it was a wash at best.
Look forward to meeting you if you make it out to Cota!
Felix's setup for all the straights, front, back, T9 to T10/11 are always very good and he gives up some vMIN at apex (a .05 here or there) to optimize the straights, which to me explains the higher vMAX on the straight, T9, etc, along with the other things you mentioned. Great laps from all 3 drivers, always different ways to improve lap times (aero, power, tire) by changing the cars but the driver who can find the limit of the platform and stay there is always the fastest, Felix does a really really good job of that in my observation. I enjoyed your video and appreciate it, thank you!
Thanks for the great feedback! Felix approached the problem in a very different way and it paid off.
Great work and video. Thank you!
Thank you and thanks for watching!
Really enjoying these videos. Planning to do something similar with my ND MX-5 track car soon. Keep the videos coming!
Awesome, thank you!
Great video 👏👏
Thank you! 👍
Awesome content & good to see the mods worked. I like the trying to make the car easier to drive. I have a Honda EP3 K24 that I have been making small changes to get faster. Each change has improved laptime at my local track. In NZ the car is difficult to upgrade suspension & still stay compliant & legal to drive on public roads so may be at the end of how far I can go.
Making mods is half the fun!
Sounds like NZ has a little CA in it.
Come on over to TX, you can do pretty much whatever you want to your cars.
Felix is faster on the straight because the slick allows better power application at the preceding apex through track out.
Interesting point.
Ted had the most power but Felix had the most low speed mechanical grip.
Damn, I love this series your GT4RS is hooked up!! What was the max G’s seen with the Hoosiers?
Also the difference in speed into turn 1 could be cause the difference in speed at the last turn?
…as always I appreciate you sharing all the data and details, some ppl are not so open.
Thank you!
We're not racing for a living so we might as well share ideas and improve our skill set.
It appears Ted hit 1.6G on the R7s.
Love the data analysis and the walk through. The exhaust package from Dundon may also play a part in why there was such a small difference in end of straight speeds even with aero drag with bigger Dundon wing and more downforce. Example: Turn 20 exit Randy 71mph and Ted 72 mph. By end of rumble strip, Randy was 86mph while Ted was at 90mph. Is this 4 mph advantage due to more power with Dundon Exhaust? This advantage slowly goes away by end of straight to only 2mph. At turn 9, both Randy and Ted get on gas prior to apex. Randy was already at 65mph while Ted was at 60mph when they get on the gas. By the time they crest the apex hump, they are going at the same speed. Ted makes up 5mph very quickly. More power and better damping over bump? Probably both. At Turn 11, Randy exits the corner at 83mph and Ted at 82mph. About 1/3 down the straight, Randy is at 116mph and Ted 118mph. Again at lower speeds it looks like Ted can make up speed due to more power. Around 130mph, it looks like there is a crossover. Even with more power, Ted can no longer keep the speed advantage. Drag QUADRUPLES with a doubling of speed. That being said, only being 2mph slower at the end of the straight is a fantastic accomplishment. Kudos to the guys at Dundon for making a nice total package. Can't wait to see Randy drive your car!
Hey Ealing! I believe you are correct, the increased drag might be over come by the added power from the exhaust changes but at lower speed, less drag, it just turns into a power advantage. I definitely feel the added stability over the curbs with MCS. For example, I'm now able to jump the curb at T3 which opens up a new line for me. I'll dive into that topic in the next video.
One takeaway from this is the value of the driver mod!
The driver is a huge piece of the puzzle but you have to ask yourself if you could take on the load that you see Randy carrying. If not then is there a set of mods that will improve the cars behavior so you are in a better environment to learn. I believe MCS is one such mod.
@@ItsTrackTime Agree! At most skill levels, there is going to be extra performance available from the mods. Similarly, for a given vehicle configuration, there’s performance to be had with developing the driver. Of course, going faster with the same car is arguably a riskier proposition - spending more time at the limit!
Interesting analysis for sure. I'd also like to see how the repaved asphalt and fresh tires came into play, but realize that will be very hard to analyze at this point, and you had to try and compare as close to apples-to-apples as you could, which is always near impossible given track conditions, weather, etc. Looking forward to seeing your laps. I'm betting you may see a 2-3 delta from your best laps, BUT betting you will 'feel' more in control and stable, which in turn will lead to the faster laps. Nice job Barry
Thank you!
The pavement changes were not a big factor, only the turn 1 apex had an advantage, and both Ted and Randy were on R7s although a couple heat cycles apart.
Randy will be back and he will have a set of stickers next time.
The video of my laps is in the works...
@@ItsTrackTime Awesome! I am hoping to get out to COTA sometime in 2025, been on the bucket list for a while. Bit challenging to make the trip from FL, though we are trying to plan a trip maybe next Spring. Would definitely let you know when our group comes out, would love to see you guys out there and in-person.
Great to hear and yes shoot us a note if you make plans for a COTA trip. Would be great to link up!
Excellent video sir! Do you plan to come out to Barber Motorsports Park next year? We have events starting in January
Thank you!
That would be a fun trip, I keep hearing great things about Barber!
@ You won’t be disappointed, the track is lots of fun! Located nearby, world’s largest motorcycle museum and Motorsports museum, bucees, bass pro, shopping mall, and local restaurants such as Saws BBQ.
Our headquarters/shop is 7 mins from the track as well 🏎️💨😁
I have a GT4 RS Clubsport. You should run on slick Michelin to strike 2'16 or 2'15. This is going to change your car on another level (Pirelli, Hankook or any other tyres are not good). Have fun.
I'm still running on 20" wheels so there are no slick options but I have been looking at the 4RS Clubsport recently.
How do you like yours?
Any must have options?
I think Randy will get you a 2:15 with the mods and fresh pavement.
Yes, mods, smooth pavement, plus cool air. Should have all three in my favor on his next run.
So, I think y’all may be losing a good deal of the time in the carousel with the line everyone is taking. From talking to Andreas and Cameron, the entry is more left and deeper before the turn and holding throttle until the walk bridge rather than hugging closer to the right side. At the halfway point to T19, I think Ted is following the curve of the right edge of the track. I think the faster line swinging out further left to build more speed. Then, cut to the right and get straight and unloaded before taking the left at T19. By doing this, the car is able to load up better for the turn (do the same at T13). This may add a few feet of extra distance traveled, but the corner exit speed will be higher. The Vmin speed at T19 should be 78+ without even straddling the sausage-btw, doing so is super close to track limits, which will kill a competition lap.
Hey Ray, when are we going to see you out there again?
Thanks for the tips! I'll go back and study Cameron's line some more and see how he approached the carousel and T19.
@@ItsTrackTime - I'll swing by next time SAGA is there.
2:08
Is that Ted? Lol
No, that would be a well driving Corvette.
Great vid and work. Saw Randy race 20 yrs ago in Cleveland. What are the oem spring rates and the new rates for the MCS setup?
Thanks for watching!
Randy is the best, fantastic person.
In front/rear pairs:
OEM 100/140 N/mm
Dundon 100/120 N/mm
👍🏻
What did you use to data log?
Garmin Catalyst and AIM Solo2
Awesome... this is firmly in 992 GT3 RS territory at COTA.
I believe so. Now I just need to learn how to leverage its full potential.
How much of the lap time is from different tires and new track resurfacing? Also hard to tell because 2 different drivers...need to get Randy back in the car
Randy and Ted were both on R7s. Ted's were new, Randy's had 3 heat cycles on them.
The repave did three things:
1) Took a bump out of the front straight - Good for driver comfort but not critical for lap times.
2) Took a bump out of the turn 1 apex - This did improve the line.
3) Took the bumps out of the back straight - Good for driver comfort but not critical for lap times.
So I don't think that was a big factor.
And yes we are going to get Randy back in the car when the weather cools down.
@@ItsTrackTime - is the hump at T3 still there? That is a driver comfort thing, but for many, it was dangerous if you had any turn in the wheel.
T3 is good with MCS but tossed me with stock dampers.
T1 is much better now - only a slight bump at the apex.
Exhaust mods helping to overcome the additional drag from the Aero upgrades?
Yes, I believe that is a factor in the straight line speed being the same.
Remember the dundon exhaust frees up more power too
Agreed, so that will overcome some of the added drag.
Randy, in your car... on slicks
Thinking...
There’s a lot of understeer dialled in with the mods, mostly corner exits; more on fast corners than slower corners.
I didn't feel that when I drove the car on track but ironically that is what Randy prefers.
What indicators are you keying off to determine this?
@ Ted’s needed more steering input on corner entry most on of the time. On exit, Ted still needed a good amount of lock, when he should be able to unwind the steering. Corner 19 punished him; and it’s probably the reason the Carousel was compromised as well. But I agree that in general, a slightly understeery car is faster (for most drivers). Good news is that now you have the right mods to play around… have fun!!
@@sgpasian - The big turns at COTA are deceiving. The apex is not where you think it is. These turns are typically wide in and narrow out, which pushes the apex away from the inside corner. If you hug the inside line, you will get pushed out. I think that is what happened to Ted - not understeer.
Did you also install the Dundon 93mm throttle body and plenum? Or just the full exhaust? I didn't see it in your install video so I figured I'd ask. If you didn't do it what was the reasoning? Great videos btw!
Thanks for watching!
No, I didn't install the Dundon plenum and larger throttle body.
I don't want to make any mods that would cause issues with my warranty.
@@ItsTrackTime Makes sense. Do you know if the full exhaust you have saves any weight at all? I wouldn't think much but usually deleting the OPF helps a bit?
They say there is only a slight weight improvement on the rear muffler and the OAP removes one cat so that helps.
I dare venture to a guess that tires played a role in lap times more than you think. The R7's are more endurance than halo lap speed, but a fresh set vs those Hankook's may be closer than you think. A7's would get you a fast lap or two until they got too hot. Also with Felix on 19's did that effectively change the final drive ratio if the tire diameter was not the same as stock? Just speculating with so many variables. Its really hard to compare unless you run same tire, same day, same driver and then you're literally splitting hairs as it is.
Great points.
I believe Felix matched the outer diameter of the slick to the OEM tire size so the drive ratios should have been the same.
Do you believe an A7 would be better in cooler temps than an R7?
@@ItsTrackTime From everything I've heard from the Mustang crowd (obvious weight difference), the A7 will come up to temp faster and have more grip for a short time, but tend to cycle out rather quickly. A lot of time trial and autocross guys/gals use them and with your weight and cooler temps, it might cut your time another second if you can manage the temps. Apparently they are finicky and do not like getting hot. But if all you're looking for is that halo lap, they might be the ticket. I'd talk to a Hoosier rep and pick their brain.
That is what I was thinking...
When the temps get cool they might be the ticket for a fast lap.
@@ItsTrackTime - I don't think the A7 is a good choice for COTA. Maybe for one lap, then they will overheat with this setup.
I used them years ago one time during the winter and they were sticky right off the bat but beyond that I didn't really notice much difference. The car I was driving back then didn't have a lot of downforce so I was wondering if this Dundon setup would be different. Sounds like you are saying the R7 in the winter would start out slow but wouldn't crap out at the end of the session whereas the A7 would start out fast but would lose grip, even in the winter, before the session completed?
Amazing Video Sir!
High V-Max’s may be due to the fact that I am running the car with very little wing.
What lap number in the session was Teds Fast Lap? I do feel this car de-rates on continuous hot laps.
Only running COTA 93 Octane in the car to be clear.
Thank you!
Ted's fastest lap was #9 so the car was very hot.
When I looked at the exit speed out of turn 20 I found the following:
Felix - 92 mph
Ted - 89 mph
Randy - 88 mph
One explanation, as a prior viewer noted, the slick provides extra grip so it puts the power down better and of course it could just be you had a better exit.
Less wing can't explain the corner exit speed difference.
@
Absolutely, that 3mph difference on track out should translate to the top end of the cars. Next step, data system! That way we can see throttle and brake traces.
I know...
Let's discuss what I'm going to need.
More corner speed means more speed down the straight.
So much was changed this was basically apples to oranges. It's also not exactly useful to claim that MCS is better than stock. Again the damping is just different and you have the ability to get close to a suitable damping constant for the spring rate you're running. I'll look for you the next time I'm at COTA and say hi.
For me the MCS dampeners are absolutely better. I can now go straight over the curbing and the car stays stable and planted.
Looking forward to meeting you next time you're at Cota!
Time for a cup car?
Those are fast! Maybe someday...
Felix was faster on the front straight bc he has 19 and 20 down and is getting a better exit.
Just looked back at the videos and yes in fact Felix has the best exit speed out of 20.
Felix 92
Ted 89
Randy 88
Ted ever heard about track limits? This is not compareable sorry. Stock is pretty much the same speed and way better looking. Upgrade is not worth it, sorry. Especially considering you lose the warranty.
None of the parts void any of the Porsche warranties - I checked.
However they are obviously not going to warranty the Dundon parts that were added.
@ Are you really sure about that? I can't believe it. Here in Germany, even a PPF can lead to the warranty being voided.
Wow, no we don't have those issues in the USA. You can install headers and a completely different exhaust without engine warranty issues over here.
@@997GT3RUSA has the Magnuson-Moss Warranty Act to settle any/all more questions about voiding warranties! However, NOTHING prevents Dealerships from TRYING to bluster someone into thinking it voids warranty. However, not all cars are track worthy, so OBD II will tattel tale like a normal C8 without Z51 and pre-track requirements, but a Camaro with 1LE or Porsche RS are trackable.