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Two Bros C2 exhaust question

Old 06-13-2010, 07:46 AM
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Two Bros C2 exhaust question

SO I just got this 2000 Superhawk. Dynojet kit, K&N ,opened up airbox. My question is I know the Two Bros is loud, it pops between upshifting. Is there anyway to prevent this. All clamps are tight and sealed where they slip on. Any advice would be great.
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Old 06-13-2010, 08:26 AM
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Old 06-13-2010, 05:19 PM
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TBR

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Old 06-13-2010, 05:40 PM
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might be lean down low, what jet config is in there?
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Old 06-13-2010, 05:43 PM
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My c2s stopped don't ever pop since I adjusted my a/f screws
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Old 06-15-2010, 07:18 PM
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err

I followed dyno jet instructions
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Old 06-15-2010, 07:28 PM
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And just what do you mean by "opened up airbox"???
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Old 06-15-2010, 07:54 PM
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Originally Posted by 8541Hawk View Post
And just what do you mean by "opened up airbox"???
Heh, I missed that. Yeah, drilling and cutting the airbox will gain you nothing in power, however will gain you plenty of headaches. Find a used airbox and go back to stock.
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Old 06-16-2010, 12:31 AM
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Originally Posted by Hawkrider View Post
Heh, I missed that. Yeah, drilling and cutting the airbox will gain you nothing in power, however will gain you plenty of headaches. Find a used airbox and go back to stock.
Yeah. In the old days, pipes, jet kit, K&N and removing-modding the airbox lid could net you 15% to 20% in horsepower. Those days are over.

Our VTRs just might be the first bike where removing-cutting-drilling the air box lid nets you nothing in peak power and makes tuning for throttle response and drive-ability virtually impossible.

Last edited by RK1; 06-16-2010 at 12:33 AM.
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Old 06-17-2010, 06:29 AM
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c2

yea, it's like the whole front of the airbox is gone.
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Old 06-17-2010, 07:41 AM
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Your bike can be tuned to run fine the way it is now. I have nearly the exact same set-up: de-paired, k&n, Mig pipes, Dynojet kit, front of the airbox lid opened up, and mine runs like a top. Very stong, no popping or backfiring. I don't have all the know-how when it comes to jetting so I had the tech at my Honda shop tune it for me. The guy used to race Ducatis and used to own a Superhawk. It wasn't easy but he finally got it just right. I don't think the airbox is your whole problem, plus with it opened up you get all that great intake noise!
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Old 06-18-2010, 05:40 PM
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c2

Oh yea, I forgot to mention that I live in Denver, CO at 5280 feet above sea level 185 front jet 190 rear clips on dynojet set at #5 postion.
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Old 06-24-2010, 07:38 AM
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I have a 1998 Superhawk and i have a full Two Brothers Racing Exhaust (High Boys) I have no rear sets and want to put some on. Any links and or info would be helpful. Also added a rear hugger. I will post pics soon.
Thank You
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