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Discussion Starter · #1 ·
i recently just bought a 2009 civic si sedan and ive alreadt modded it, AEM SRI and Prokit springs and sparco seats! need to do more to the motor but i have a hard time decideing if i sould get the exhaust or header. just figure i post for some advice from all you guyz on. the coupe had to go,so i got the sedan. skunk 2 or strup header. LMK! thankz
 

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I think the concensus here is to go for the header, since you probably want power now, not later. 70mm exhausts are loud, and you won't see much gains by itself.
 
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