| If you are loosing rail pressure due to the FPRV it will help a lot. I was having this same type of problem on the dragstrip even with the lift pumps and never got a code for it. After the shim i have not had anymore problems, it pulls hard the whole way down the track.
__________________ KYLE  05 Chevy LLY Crew Cab LT Dually 4x4 with lots of go fast goodies!!! Suncoast Tranny, TTS lift pumps, 5" straight pipe, and much more!!! Send me a PM if you want more info on my mods. EFI Live Tuned by IdahoRob!!!! |