Quote:
Originally Posted by sfgiantsfan9
What are other headers making?
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well couple thing to say first.. when you add headers you should be adding a new intake and tune of course...
ok with my M6 LS3 engine putting down stock 350-360WHP... can get 420 WHP with kooks headers + CAI + TUNE... (and i did in deed do this) you should be getting like 50-60 WHP with headers .. 30 WHP with headers+ tune. i mean a tune it self should be like 15-20 WHP . and the guy i was talking to got 30whp with a tune in IMO is not very good .... now if he gain 30WHP without a tune its a whole different story. its a A6 so i guess its differnt