My lly will thro a p0088 code and defuel. Ive got efi dsp on the edge cts monitor. I can clear it out and it runs fine. I pulled home a truck on a trailer Sunday and the stock tune was the only one that wouldn't thro the code. The load was at around 45-60% on the monitor and I wasn't pushing it hard. Just cruising at about 65-70. The code on the edge says rail pressure too high. When cruising at that speed it was around 22-24kpsi. Any ideas or help is appreciated.
