600 Modifications This section is specifically for questions and advice pertaining to mods of the current 600 models.

09 cbr straight pipe back pressure ??.....

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Old 01-01-2012, 06:58 PM
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Default 09 cbr straight pipe back pressure ??.....

i just recently cut the undertail exhaust off right under the rearset and was wondering how much my 09 cbr 600 needed as far as back pressure with out burning up my valves
 
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Old 01-07-2012, 07:59 PM
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Originally Posted by hughtexjassole View Post
i just recently cut the undertail exhaust off right under the rearset and was wondering how much my 09 cbr 600 needed as far as back pressure with out burning up my valves
you need a baffle of some sort, or the cops are gonna pull you over,
no backpressure will lag you on takeoff at low rpms.
i suggest making a shorty slipon.
 
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