Quote:
Originally Posted by mosc
those dyno charts on nasonic are from an STi which has more turbo (and more motor in this case) to take advantage of the flow. I agree equal length headers give gains but if you have a stock TD04, you're not going to see much gain from other, boxier, setups.
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Not so at all.An equal lenght header has some to do with flow and some to do with pulsing exhaust gas energy.Also its about chosing a header with the proper primaries (and up-pipe diameter) for your application.Not all are the same.