cablebandit

iTrader: (37)

As you know I am using 50# msd injectors with a boost/vacuum referenced regulator. Here is what I have found working in ls1edit. My fuel pressure is set at 50psi static (no hose connected) When the hose is connected the fp regulator sees vacuum at idle and cruise and drops the fp to 42psi. At WOT the fuel pressure rises 1:1 with boost. NOW...for the interesting part: I have my injector constant around 5.3.....flatlined all the way across. This is getting me some good ltrims. Next is the wacky part. My PE-vs-RPM is at -.300 Yes that's a MINUS I think GM KNEW we were losing fuel pressure due to the crappy regulator. This setup has gotten me very close in the ballpark. If you think about how a stock setup drops fuel pressure and all.....you can see how my tune starts to make sense