I am running a 2002 RSX-S engine with RC 550 injectors, IPSK2 cams, 4-2-1header, no cat, 3 1/2" short pipe.
Recently I've been running E85, that's 85% ethanol and 15% gas. I'm using the standard IPSK2 calibration with 75% increased fuel trim. Mileage sucks, but power "feels" good. My Lambda readings ...