wut are the hp gains with headers, up pipe, turbo back exhaust, and the much debateable cai? anyone have the figures its turbo xs turboback, hks up pipe and aps headers, and aem cai.
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18 years ago
engine back exhaust
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18 years ago
It varies vehicle to vehicle, what kind of boost would you be putting through the motor with thos emods? Stock levels or higher?
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18 years ago
It's very different between, say, a WRX and an STi. The WRX has a much more restrictive exhaust due to the cat in the downpipe. The numbers I've seen for the WRX are on the order of 30+HP from the combination of an engine back and chip upgrade
Not sure a COI does much alone, but it may help an overall upgraded engine. It sure makes the intake MUCH louder!
Philip