going from intake with stock exhaust to intake with headers that made launching harder. it picked up power all around.
in my mid range tho i only boost 4psi, then it would touch 6-7 after 5500. ive heard of other people talking about loosing some lowend with out a cat compared to the same set up with a cat.
but i dont care, i just ramp the timing up in the midrange![]()