Quote:
Originally Posted by why?
The big thing is if you are going to do more mods the community seems to believe that any initial gains from an intake are flattened once you get a good header and exhaust any ways. But some intakes claim extra power, who knows if it is true.
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define "flattened"
for example a cat back exhaust on its own isn't going to add much if any power, but when you have headers installed the bottleneck is no longer in the initial cat. while you may get 0 whp from a cat back exhaust and 6-7 whp from a header, you might get something like 10-12 whp from a header and exhaust in tandem.
if your car is doing more on the back end with flow, it could probably also do more with intake flow.