Hello, congrats, very nicely done. Quick question, which kind of drill bit did you used (what material) ? Just a standard metal drill ? I am not used to drill in carbon. Thanks
Just a normal drill for metal/wood. I do suggest you make a smaller hole first with a smaller drill and go for the bigger one. By doing so it will be easier to drill the hole more precisely. However, drilling makes the finish of the hole a bit rough, therefore I suggested to finish it up with dermal to make things nice and smooth. Just be careful not to increase the size of the hole with it too much. Drilling carbon is nothing special. Its thin so its like drilling though a sheet of metal. The residue is fine black dust from the resin and the carbon fibers. If you'll need any tips along the way I'd be glad to help (I need about a day to answer)!
Try spraying some WD40 in between. It is an aerosol and will evaporate anyway. Then heat up the exhaust well by running the engine, you might as well go for a short ride. Then pull it out hard with a set of thin edged pliers. The fitment is very tight, but it should work... Let me know if you need further assistance
I assume they would stay in for some time because the fit is very tight but I do always bolt them in. For the matter of fact they can only be properly put in with a hammer and pulled out with pliers... If you plan to put them in and out often, you don't need the bolts I assume.
The Akrapovic does add 2 hp over the stock exhaust, however upon taking the DB killers out, I believe you loose the 2 hp again due to the change in engine back pressure. If you were to remap the ECU however, you could see even bigger gains without the DB killers.
@gravelroad have you had any issues with the bike since you removed the db killers? I've read these engines run lean to meet emissions and removing the db killer can cause it to run too lean
Hello, I hope you can help me. I bought this exhaust used and it came without the db killer. Can you tell me the size of yours? Width and length? Thanks in advance.
Hola amigo, gracias por el video, pero no encuentro los dos tapones de goma akrapovic...me puedes pasar enlace de amazon o asi? Muchas gracias por el video y las explicaciones
You can either remove the rivets and get the carbon off or drill the holes in the carbon. Both will get you to the bolts holding the baffles in. I personally did not manage to get the carbon cap off (it is possible but I don't know how). If you are planning to use the baffles every now and then, your only option is to drill the holes in the carbon. There are two screws securing the baffles, otherwise they might fall out without them.
I heard it is possible to remove the carbon however in my case it was not possible. Rivets cannot be purchased from Akrapovic directly, however I did find a company that was their supplier. The ones they use are watertight and of stainless steel. They are identical.
@@gravelroadslovenia any chance you can send me the link for the rivets. I think I’ll try to remove the cap as first, as I don’t want to make holes. Thanks
@@v.gousis2241 the company is called Pnevmotex d.o.o, and the type of rivet you need are "blok zakovica rf 4.8 X 8 ZAPRTA". If they will refuse shipping it to you let me know and we will work something out. When drilling the holes you will need a high end drill bit. Installing the rivets also requires a professional tool since they are too strong to be clipped in with a classic hand tool. Since I went through the process I would strongly recommend avoiding what you are planning to do. Drill the holes in the carbon and get the rubber covers from Akrapovic, it still looks good.
Thanks for the view inside the muffler. The pupose of the baffles is apparently to just reflect the pulses back for another pass across the holes that expose the sound absorbent material. In Slovenian, is the "krap" in Akrapovic pronounced as the English "crap"? Where did you learn your English? It's quite good American English.
Seems to be so! What I have also recently learned is that the pressure pulses created by the baffles (back-pressure) aid performance. The top speed with the baffles is about 10km/h higher than without. Yes that is correct, "krap" as "crap" 😂... I attended an international school. 🙂
@@gravelroadslovenia - Better performance with some back pressure seems so mystical these days with catalytic converters. Back-in-the-day, before cat cons, especially in the days of 2-strokes, exhaust tuning that used those reversion waves was common.
@@gravelroadslovenia are you planning to make ajustments to the exhaust placement? We have the same bike, with the nice akrapovic. But its so vulnerable on the side! what are your thoughts?
@@Townmaking Not really. I protected the carbon with 3M Paint Protection Film and put a rubber silencer protector on the exhaust (check Aliexpress). For hard enduro I put the original exhaust back on. The swingarm is protected by the 3D Moto Carbon Kevlar cover, however the ones from Acerbis work well too. This combination does the trick for me.
@@gravelroadslovenia hi.. ive done it, I used wd40 and used a large socket set over the small end pipe and knocked inwards just to break the seal and the pulled and it came out easy.. cheers
This is a ride I’ve done recently without the DB killers. The sound on the video doesn’t come though as well as in real life, but I can tell you it sound very good! Here is the link: th-cam.com/video/U3wZcUkfkUM/w-d-xo.html
u could use Self Adhesive Carbon Fiber Vinyl Wrap Tape to cover the holes 😉i like the stock look and sound. if i want louder exhaust ill get another one before i destroy (aka modify) the original Akra.
I completely agree with your perspective. Not to mention how easily it can get damaged when off-roading. I have another stock exhaust on me, thats the reason I didn't get something else.
@@kloppskalli This problem goes away with age 😉 Jokes aside, I tend to ride with earplugs. Reduces the loudness of the wind and exhaust just right. I would recommend giving it a try.
Papi, look better next time 😉 Exhaust test: th-cam.com/video/3MfSy4jeRJo/w-d-xo.html Driving: th-cam.com/video/U3wZcUkfkUM/w-d-xo.html (watch from 8:00)
just done everything showed in the video today and wow, what an improvement !!! bike has a total different soul now.. thanks mate!
Strongly suggest this!!! Just did mine and it is awesome, couldn't be more happy. It is not too loud at all, just right!
The way to go!! 💪
Great video! Do you think it is a problem if you remove one db-killer?
Only for the neighbours
Hello, congrats, very nicely done. Quick question, which kind of drill bit did you used (what material) ? Just a standard metal drill ? I am not used to drill in carbon. Thanks
Just a normal drill for metal/wood. I do suggest you make a smaller hole first with a smaller drill and go for the bigger one. By doing so it will be easier to drill the hole more precisely. However, drilling makes the finish of the hole a bit rough, therefore I suggested to finish it up with dermal to make things nice and smooth. Just be careful not to increase the size of the hole with it too much.
Drilling carbon is nothing special. Its thin so its like drilling though a sheet of metal. The residue is fine black dust from the resin and the carbon fibers. If you'll need any tips along the way I'd be glad to help (I need about a day to answer)!
@@gravelroadslovenia thanks a lot for your precise answer.
I did the holes...i.put out the bolts....but the silencer didn't come out!!! How i can put them out???please help!!!any tips?????
Try spraying some WD40 in between. It is an aerosol and will evaporate anyway. Then heat up the exhaust well by running the engine, you might as well go for a short ride. Then pull it out hard with a set of thin edged pliers. The fitment is very tight, but it should work...
Let me know if you need further assistance
Hey! You think would be fine to run the exhaust with the dB killer on without bolting them?
I assume they would stay in for some time because the fit is very tight but I do always bolt them in. For the matter of fact they can only be properly put in with a hammer and pulled out with pliers...
If you plan to put them in and out often, you don't need the bolts I assume.
Hello,
Nice work :D
How did you make the hole?
What type of drill did you use to make the hole?
I made the hole using a cone drill bit. Then I went around with a Dremel to smoothen the edges (normal sandpaper should work too).
Great video, thanks. By the way, would this add 1-2hp to the power of the T7 compared to the regular version?
The Akrapovic does add 2 hp over the stock exhaust, however upon taking the DB killers out, I believe you loose the 2 hp again due to the change in engine back pressure. If you were to remap the ECU however, you could see even bigger gains without the DB killers.
@@gravelroadslovenia ok. Thanks so much.
@gravelroad have you had any issues with the bike since you removed the db killers? I've read these engines run lean to meet emissions and removing the db killer can cause it to run too lean
No issues at all. It has been running like so for the bast 10k km. I have a friend that has done 20k km like this with no issues either.
@@gravelroadsloveniaNice, thanks for replying
I had the same problem, carbon cap would not come off after removing rivets, so i had to drill carbon cap.
Hello,
I hope you can help me.
I bought this exhaust used and it came without the db killer.
Can you tell me the size of yours?
Width and length?
Thanks in advance.
Hey, I have missed your comment, sorry. Send me your email and I''l send you all the dimensions and photos.
Hola amigo, gracias por el video, pero no encuentro los dos tapones de goma akrapovic...me puedes pasar enlace de amazon o asi? Muchas gracias por el video y las explicaciones
Here you go amigo 😉
www.tradeinn.com/motardinn/en/akrapovic-rubber-insert-ref:p-guv004/137139472/p
Hello, nice vidéo thanks, did you try with only one dB ?
I haven't, however I'm not sure how that would affect the sound. Make it half as loud maybe? 😅
one question do you just have to make the two holes on the side or do you also have to remove the rivets.
You can either remove the rivets and get the carbon off or drill the holes in the carbon. Both will get you to the bolts holding the baffles in.
I personally did not manage to get the carbon cap off (it is possible but I don't know how). If you are planning to use the baffles every now and then, your only option is to drill the holes in the carbon. There are two screws securing the baffles, otherwise they might fall out without them.
So the carbon cap doesn’t come out?
Do they sell titanium rivets?
I heard it is possible to remove the carbon however in my case it was not possible.
Rivets cannot be purchased from Akrapovic directly, however I did find a company that was their supplier. The ones they use are watertight and of stainless steel. They are identical.
@@gravelroadslovenia any chance you can send me the link for the rivets.
I think I’ll try to remove the cap as first, as I don’t want to make holes.
Thanks
@@v.gousis2241 the company is called Pnevmotex d.o.o, and the type of rivet you need are "blok zakovica rf 4.8 X 8 ZAPRTA". If they will refuse shipping it to you let me know and we will work something out.
When drilling the holes you will need a high end drill bit. Installing the rivets also requires a professional tool since they are too strong to be clipped in with a classic hand tool. Since I went through the process I would strongly recommend avoiding what you are planning to do. Drill the holes in the carbon and get the rubber covers from Akrapovic, it still looks good.
What did You did with the rivets inside ?
Left them in
Thanks for the view inside the muffler. The pupose of the baffles is apparently to just reflect the pulses back
for another pass across the holes that expose the sound absorbent material.
In Slovenian, is the "krap" in Akrapovic pronounced as the English "crap"?
Where did you learn your English? It's quite good American English.
Seems to be so! What I have also recently learned is that the pressure pulses created by the baffles (back-pressure) aid performance. The top speed with the baffles is about 10km/h higher than without.
Yes that is correct, "krap" as "crap" 😂...
I attended an international school. 🙂
@@gravelroadslovenia - Better performance with some back pressure seems so mystical these days with catalytic converters. Back-in-the-day, before cat cons, especially in the days of 2-strokes, exhaust tuning that used those reversion waves was common.
Cant you just put a piece of black tape of the holes? It probably seals it. The carbon doesn't really get that hot?
In the summer it does. I'm not sure how the tape would hold up. If you replaced it regularly, should probably work.
@@gravelroadslovenia are you planning to make ajustments to the exhaust placement? We have the same bike, with the nice akrapovic. But its so vulnerable on the side! what are your thoughts?
@@Townmaking Not really. I protected the carbon with 3M Paint Protection Film and put a rubber silencer protector on the exhaust (check Aliexpress).
For hard enduro I put the original exhaust back on.
The swingarm is protected by the 3D Moto Carbon Kevlar cover, however the ones from Acerbis work well too.
This combination does the trick for me.
@@gravelroadslovenia today I removed the debuffer like in the video, everything worked fine. Thanks for your videos
I cant get the db out.. solid .. help
Interesting... try heating up the exhaust and try to pull it out hard with a set of pliers. It is a tight squeeze.
@@gravelroadslovenia hi.. ive done it, I used wd40 and used a large socket set over the small end pipe and knocked inwards just to break the seal and the pulled and it came out easy.. cheers
are the db killer screws welded there?
Yes, from one side. You can break that weld with some muscle and a wrench.
It's not the strong loctite?
Bravo! Please make a open driving video
This is a ride I’ve done recently without the DB killers. The sound on the video doesn’t come though as well as in real life, but I can tell you it sound very good! Here is the link: th-cam.com/video/U3wZcUkfkUM/w-d-xo.html
Thank you boss 👍🏼👌🏼👌🏼
BRAVOO!! :) very interesting and useful...tnx :)
Thank you so much
u could use Self Adhesive Carbon Fiber Vinyl Wrap Tape to cover the holes 😉i like the stock look and sound. if i want louder exhaust ill get another one before i destroy (aka modify) the original Akra.
I completely agree with your perspective. Not to mention how easily it can get damaged when off-roading. I have another stock exhaust on me, thats the reason I didn't get something else.
@@gravelroadslovenia i finally did it ... got tired of hearing only the engine and not the exhaust note
now it is a bit too loud but I guess I|ll get used to it
@@kloppskalli This problem goes away with age 😉
Jokes aside, I tend to ride with earplugs. Reduces the loudness of the wind and exhaust just right. I would recommend giving it a try.
Thank you
Nice
Nice Plant - LOL PUFF PUFF
Si haces un video de un escape prendé la moto y acelerala papi..!!! 👎🖕
Papi, look better next time 😉
Exhaust test: th-cam.com/video/3MfSy4jeRJo/w-d-xo.html
Driving: th-cam.com/video/U3wZcUkfkUM/w-d-xo.html (watch from 8:00)