Hey everyone, I have a gt3076r. Im running 20psi. My fuel pressure is 43psi base (vacuum line off) w/ 750cc injectors, I run the car with just a 4.3v clamp and the car was off the charts rich. I think procecceded to alter the voltage with the emange and it started to lean out, 10:1 etc. with only 3.6v going to the pcm the car was 11:1 falling into the 10's, and into the 9's in 4th gear. I was receiving knock retard of 11 degrees! The car went 13.0 @ 112.56 on street tires with a 2.24 60'. Im either thinking i have a bad knock sensor which is causing the pulled timing and rich a/f or maybe i just have to lower my fuel pressure more and retune. Opinions?