My cobalt vs supercharged si vs srt4
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could have not been a full CAI... and remember the 08+ si while it is a k20 it's no the same cam's/head flow as the RSX-s. which is why vtech does not hit as hard in the si's.. now slap an 05 type s head(the most power full K20 head in stock form) on you will get some serious sing once S/Ced
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Josh@ottp
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09-08-2015 10:18 AM