Great video as always. I've also found that aftermarket intakes that maintain the stock MAF housing size still flow differently even if the size is the same and will benefit from MAF rescaling. Changes related to exhaust (J/downpipe, catbacks etc) require remapping to make the best of them but generally nothing catastrophic will happen if you're waiting for a few other mods before getting it all tuned together.
Have not done any modifications, just spt add ons. So no remapping needed, still interested in your excellent explanation on remapping. 70 retired lineman diyer ,just enjoy driving my 20p6 Subaru sti
Hi Duncan, I think Jason may have already asked you but, I recently got an imported Subaru exiga running the ej20 engine. When you’re down in Cornwall next might get it in with you to get it running better and maybe squeeze a little more out of it.
1 thing that "might" be worth covering is how much flexibility ECU's have, in terms of pulling timing etc on certain mods. A lot of owners simply don't understand that the stock ECU is looking for certain things in the cycle to match up (air in, fuel in, air out) and if there's an imbalance in this due to a modification or fault the ECU will TRY and make changes to suit, but often cannot cope with extreme's like aftermarket parts, hence why mapping is required to TELL the ecu what's been done. Fuel cut/boost cut due to unmapped mods, boost spikes, etc could all tie into this.
Vaguely related so will ask it here- is an aftermarket intake pipe (Samco for example), worth fitting before a remap along with other mods? I've heard the oem intake pipe can fail, but are there actual gains to be had from going with a silicone pipe replacement? My car (jdm hawk sti) is currently mapped with a couple mods but will be remapped again in the spring as I have a turbo back exhaust and sports cat down pipe to go on, debating whether to throw a silicone intake pipe on at the same time, in for a penny etc etc. Keep up the great videos!
Hi James.. Thanks for watching and the question 🙏 The std intake will not cause a restriction on power on your car for anything that the std turbo will be capable of. There is a benefit higher up power wise but lots of the silicone inlets introduce more problems that they fix so I wouldn't recommend changing. Good ones are very expensive and whereas some tuners will try to sell you one, there are big downsides. If the std inlet breaks, get another std one imo 👍 If you were to go bigger turbo (again I wouldnt recommend as it will change the characteristics of your super spooly jdm) then perhaps look at one of the solid aftermarket inlet hose options. I hope that helps.
Hi Duncan, I have a 2008 sti looking at putting a bigger top mount intercooler (bigger surface area and volume) will it need to be mapped? or will it be fine to use until I do my sports cat and induction kit and get it booked in with you.
Hi Richard.. Thanks for the question.. Assuming it is a more efficient intercooler and no leaks it will onky make your car safer in the meantime.. Will be fine.. Or at least more fine than it is 😉👍
It would not NEED remapping so long as just changing that but to get the extra power that is available because of the cooler air it would be beneficial 👍
I thought I covered this in the video.. It is effecting how the air leaves the engine so would need at least checking but probably adjustment to the map 👍👍
Bro is my legacy GT gen 3 jdm model need a remapping? What I heard alot is jdm twin turbo model is designed for 100 octane fuel we only have 98 but it's triple the price of 92. So everyone uses 92 except you're rich and riding a brand new G wagon or a Lexus. If so it's a true. Can it be mapped to 92 octane fuel?
Yeah they have fairly aggressive ignition timing for the jap fuel so really don't thank you for 92 octane. It depends on the Yr of yours as to which ecu is in it as to whether it can be mapped. An aftermarket ecu isn't an option as it won't control 2 turbos so unless you swap to single turbo the option is see if the std ecu can be tuned if not.. Octane booster and check to make sure everything is running safe and happy.
@@racedynamix thanks for the quick answer. Mine is from 2000. And it seems not a E-tune version or something just a regular one. From my research all over the internet this one is confirmed Rev-B. Do you guys have flash tuning service?
@@buyanbatbold7522 unfortunately no flash tuning. I only map the cars physically with me. However Ecutek software can access that ecu and map a lot of the parameters. But and it's a big but, the ecus are prone to dying whilst flashing so always have a get you home spare ecu available. Where are you based?
@@racedynamix I'm live in Mongolia. Also I do have a Eifel ecu from same model year. Even tho ecu is not that hard to find. Since this car is so rare here. Nobody buys it's ecu's.
Very true.. in my experience people are almost always delighted with the improvement on a std car let alone a nodded one that wasn't liking the mods pre remap
@@racedynamix I’m going to start buying bits for mine soon before I come and see you for a map I might have a few questions on part recommendations lol, Its so nice as well being able to ask a proper mapper like yourself questions because normally you only really get to chat to them as there putting all the equipment in the car and strapping it to the dyno and when there taking it back off again which doesn’t take long lol
Great video as always. I've also found that aftermarket intakes that maintain the stock MAF housing size still flow differently even if the size is the same and will benefit from MAF rescaling. Changes related to exhaust (J/downpipe, catbacks etc) require remapping to make the best of them but generally nothing catastrophic will happen if you're waiting for a few other mods before getting it all tuned together.
Great point. I did mention that in the video but it maybe wasn't clear enough. Thanks sir 🙏
Have not done any modifications, just spt add ons. So no remapping needed, still interested in your excellent explanation on remapping. 70 retired lineman diyer ,just enjoy driving my 20p6 Subaru sti
That's great. Thank you for watching Peter 🙏
Hi Duncan, I think Jason may have already asked you but, I recently got an imported Subaru exiga running the ej20 engine. When you’re down in Cornwall next might get it in with you to get it running better and maybe squeeze a little more out of it.
He hasn't but thanks for the heads up. Nice car btw 😎😎
1 thing that "might" be worth covering is how much flexibility ECU's have, in terms of pulling timing etc on certain mods. A lot of owners simply don't understand that the stock ECU is looking for certain things in the cycle to match up (air in, fuel in, air out) and if there's an imbalance in this due to a modification or fault the ECU will TRY and make changes to suit, but often cannot cope with extreme's like aftermarket parts, hence why mapping is required to TELL the ecu what's been done. Fuel cut/boost cut due to unmapped mods, boost spikes, etc could all tie into this.
👍
Vaguely related so will ask it here- is an aftermarket intake pipe (Samco for example), worth fitting before a remap along with other mods?
I've heard the oem intake pipe can fail, but are there actual gains to be had from going with a silicone pipe replacement?
My car (jdm hawk sti) is currently mapped with a couple mods but will be remapped again in the spring as I have a turbo back exhaust and sports cat down pipe to go on, debating whether to throw a silicone intake pipe on at the same time, in for a penny etc etc.
Keep up the great videos!
Hi James.. Thanks for watching and the question 🙏
The std intake will not cause a restriction on power on your car for anything that the std turbo will be capable of. There is a benefit higher up power wise but lots of the silicone inlets introduce more problems that they fix so I wouldn't recommend changing. Good ones are very expensive and whereas some tuners will try to sell you one, there are big downsides. If the std inlet breaks, get another std one imo 👍
If you were to go bigger turbo (again I wouldnt recommend as it will change the characteristics of your super spooly jdm) then perhaps look at one of the solid aftermarket inlet hose options.
I hope that helps.
Hi Duncan,
I have a 2008 sti looking at putting a bigger top mount intercooler (bigger surface area and volume) will it need to be mapped? or will it be fine to use until I do my sports cat and induction kit and get it booked in with you.
Hi Richard.. Thanks for the question.. Assuming it is a more efficient intercooler and no leaks it will onky make your car safer in the meantime.. Will be fine.. Or at least more fine than it is 😉👍
Great t shirt ,where can I purchase one
Haha thanks. Unfortunately it isn't one of my designs.. I got it from ebay 😎
Will check out gracias
Hi I have a 06 WRX would I need to get it mapped again if I put a sti intercooler on it. Thank
It would not NEED remapping so long as just changing that but to get the extra power that is available because of the cooler air it would be beneficial 👍
How about a catback?
I thought I covered this in the video.. It is effecting how the air leaves the engine so would need at least checking but probably adjustment to the map 👍👍
Bro is my legacy GT gen 3 jdm model need a remapping? What I heard alot is jdm twin turbo model is designed for 100 octane fuel we only have 98 but it's triple the price of 92. So everyone uses 92 except you're rich and riding a brand new G wagon or a Lexus. If so it's a true. Can it be mapped to 92 octane fuel?
Yeah they have fairly aggressive ignition timing for the jap fuel so really don't thank you for 92 octane.
It depends on the Yr of yours as to which ecu is in it as to whether it can be mapped. An aftermarket ecu isn't an option as it won't control 2 turbos so unless you swap to single turbo the option is see if the std ecu can be tuned if not.. Octane booster and check to make sure everything is running safe and happy.
@@racedynamix thanks for the quick answer. Mine is from 2000. And it seems not a E-tune version or something just a regular one. From my research all over the internet this one is confirmed Rev-B. Do you guys have flash tuning service?
@@buyanbatbold7522 unfortunately no flash tuning. I only map the cars physically with me.
However Ecutek software can access that ecu and map a lot of the parameters. But and it's a big but, the ecus are prone to dying whilst flashing so always have a get you home spare ecu available. Where are you based?
@@racedynamix I'm live in Mongolia. Also I do have a Eifel ecu from same model year. Even tho ecu is not that hard to find. Since this car is so rare here. Nobody buys it's ecu's.
The answer is yes any change requires a tune don’t take a shortcut
👍
Cheers
Thank you 🙏
This is not what people want to hear lol, personally I love having cars remapped it’s so worth doing unless you’ve had one done you won’t get it.
Very true.. in my experience people are almost always delighted with the improvement on a std car let alone a nodded one that wasn't liking the mods pre remap
@@racedynamix I’m going to start buying bits for mine soon before I come and see you for a map I might have a few questions on part recommendations lol, Its so nice as well being able to ask a proper mapper like yourself questions because normally you only really get to chat to them as there putting all the equipment in the car and strapping it to the dyno and when there taking it back off again which doesn’t take long lol