First off, a little background on my setup. For the December runs I had a JDM highport swap with S4 cams, UR pullies, Thermoblock spacers, JWT popcharger, wrapped SSAC with 2.5" downpipe, Catco 3" high flow cat, and a 2.5" mandrell bent catback exhaust. Timing was set at 19 degrees. I also have a JWT flywheel and an SR16 tranny if that makes any difference (I wouldn't think it would matter). The changes made from the Dec runs to the Jan runs were a JWT ecu with the pop program for premium fuel and rev limit raised to 7950, timing moved from 19 to 15 as jwt recommends, and finding & fixing a vacuum leak that was causing a rough idle even after the new ecu was installed. Here are the graphs:
I was very dissapointed with the Dec runs, and while I'm happy with the increases in both power (+6.5 hp) and torque (+11 ft-lbs), I was honestly expecting more than 150 hp. I didn't have afr numbers for the Dec runs, but I had a bung installed pre cat on the exhaust before the Jan runs so that afr's could be watched.
I honestly don't know a lot about afr numbers, but was told that I am dangerously lean. I picked up a adjustable fpr, fp gauge, and a new fuel pump from Greg V, and while I can install these on my own, I don't know what setings I should be at in terms of fuel pressure, afr, etc.
I met a few guys at the Atlanta dyno day in January that seem knowledegable about this and one offered to help me out, but I lost his number. Any help here?
