I have a 2001 GMC Sierra with 4.8L, Powerdyne 6psi, JBJ Shorties, Delphi 25.5 injectors, Flowmaster, 4.11 Gears, and 20" Wheels. I bought the Predator U7198 back in 06 when I bought the truck. I had the software updated in 2010 to v.9r17. Wondering if I can get a tune written where I can ditch the FMU for more consistent results. I have never been able to get it dialed in on my own, and if I did get it running real nice the condition would deteriorate. Seems especially if I take a long trip. After extended driving becomes very doggish and have to adjust injector slope. It is like the trims slowly changing map over time. Anyway, if there is anyway I could get a good base tune for this setup I would really appreciate it. Also, is there anyway to cancel out the code for the egr that I have eliminated? Thanks.
2001 GMC Sierra 4.8L, Powerdyne Supercharger 6psi pulley, 32lb injectors, 160 therm, TR6 plugs, K&N filter, Stainless Shorty Headers, Flowmaster Supertruck Exhaust