I have an 89 5.0 LX I bought in 1989. Over the years I have done many bolt on mods. Everything from light weight drive shaft and fly wheel, to larger throttle body and MAF sensor, 3:73 gears etc... I have the original "Superchips" ECM I bought in 1989 still in the car, however, I am running out of fuel at high RPM's and could probably use more fuel all along the RPM range as of course this motor is getting much more air, but no more fuel. The ECM doesn't know I have opened things up over stock values. What I'm looking for is a setup to either replace or re-program my ECM to increase the fuel. A custom map being the epitome of what I want. Any Ideas? Thx.