Originally Posted by Steve
Having owned several boosted cars with longtubes in the past, I can tell you from experience that for a street car, they are not worth the expense. Minimal gains power wise (thought they sound great) but then you begin to have issues with tunes, 02 sensors and emissions issues. Yes, you can have a "hook up" not to deal with that, but having to go through the hassle every year is a pain in the ass. Plus, these new cars will need "not ready" codes regardless.
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Why even do any performance modifications then, if experience tells you its hassle and not worth expense?
I fully disagree with headers adding minimal gains to f/i setups.