How to shorten exhaust?? - Page 6 - Yamaha R6 Forum: YZF-R6 Forums
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post #51 of 59 (permalink) Old 05-05-2012, 09:11 AM
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Re: How to shorten exhaust??

if ur looking at the bike do u take off the end cap to the left an cut or do u take off the end cap to the right where it mounts to ur mid pip an cut......
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post #52 of 59 (permalink) Old 05-24-2012, 08:27 PM
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Re: How to shorten exhaust??

Quote:
Originally Posted by Atcr1 View Post
Done it to several R1's including my own, My R6 and a buddies GSXR, all came out stellar
R6 looks clean do you have a video of the sound?
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post #53 of 59 (permalink) Old 07-16-2012, 10:05 PM
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Re: How to shorten exhaust??

I always wondered about shortening the slipon. But I wanted to know if it has any adverse effects on performance?
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post #54 of 59 (permalink) Old 07-27-2012, 08:08 AM
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Re: How to shorten exhaust??

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Originally Posted by williamluke View Post
I always wondered about shortening the slipon. But I wanted to know if it has any adverse effects on performance?
Adverse affects on performance can very with how you actually mod the can. I just did this mod and without PCIII I lost power on my low and mid range. Top end seems to be, maybe, slightly better. Remember, this is not an engineered can, and if you start reading into back pressure and air/fuel mixtures, apart from a cheap decent sounding mod, this is very primitive to a two bros, yosh or leo slip-on.

With PCIII you can correct the changes in back pressure by altering the air/fuel mixtures. PCIII offers preloaded maps for different slip-ons so you will have to find one that gets close. A custom tune on the dyno will do this properly and is the best recommended option to properly adjust for any mods you do.

I have found with PCIII thus far - since I haven't been able to get dyno time, the Yoshi Slip-on with aftermarket or stock air filter pre-loaded PCIII map has been the best.

Bottom line, if you do cut the stock can down there are two things to consider performance wise. You don't want to run too lean of a fuel mixture because you could burn the exhaust valves and you most likely will lose some power on the low and mid range until you can get a custom tune.
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post #55 of 59 (permalink) Old 07-27-2012, 08:44 AM
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Re: How to shorten exhaust??

Previous owner chopped the Yosh on my old '02, pretty short too. I actually really like the look and sound. It was loud.


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post #56 of 59 (permalink) Old 12-07-2012, 05:44 PM
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Re: How to shorten exhaust??

I cut down my stock exhaust using a lot of the info I found on here. I cut off 9" and painted the can high-temp flat black with gloss black on the end caps. Sounds 10 times better than stock, and looks pretty sweet too! What do you think?

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post #57 of 59 (permalink) Old 12-08-2012, 07:35 AM
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Re: How to shorten exhaust??

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Originally Posted by jpking View Post
I cut down my stock exhaust using a lot of the info I found on here. I cut off 9" and painted the can high-temp flat black with gloss black on the end caps. Sounds 10 times better than stock, and looks pretty sweet too! What do you think?

I love it! I need to get mine done! I'm so lazy!!
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post #58 of 59 (permalink) Old 12-08-2012, 07:44 AM
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I do whoolies to shorten my stock exhaust. So far I've managed to scrape down an 1".

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post #59 of 59 (permalink) Old 12-08-2012, 12:20 PM
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Re: How to shorten exhaust??

Quote:
Originally Posted by jpking View Post
I cut down my stock exhaust using a lot of the info I found on here. I cut off 9" and painted the can high-temp flat black with gloss black on the end caps. Sounds 10 times better than stock, and looks pretty sweet too! What do you think?

Looks good man. I painted mine the same way on my 07 R6r. For sale now in classifieds.

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