Quote:
Originally Posted by vitinvictor1
Hi I need help to choose headers for my Z...Right now I have the k&n intake and the invidia gemini catback...So please guys help me....how much whp I could get when I install a header and the flash the car?
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Way too many variables to give any kind of firm answer. Which headers? Who does the tune. &c, &c, &c. Some of the other members may be able to give you an approximate range.