This is a Turbo Ly5 5.3 Gen 4 EBay gt45 at 4LB of boost, stock e85 injectors running pump gas 93 tr6 plugs 228/232 cam behind a 2007.5 Silverado.
The Issue I am having is once I go WOT the AFR is good around 11 but seems to choke and doesn't go anywhere almost like 2 step sounds like its hitting a limiter. drives around 13-14afr but misfires all over the place it drove fine before the turbo, haves new plugs wires and coils and injectors and fuel pressure seems good. Also the log wont read past 105kpa this is a 2 bar map sensor on the 2bar OS.
There has to be something major I'm missing in the tune any help would be appreciated this is my first SD tune.
Issues:
- Kpa not reading past 105.
- Backfires all over the place. "but sometimes doesn't and drives fine until WOT"
- WOT Chokes the more throttle you put, at 100% throttle it sounds like 2step limiter.
I've posted the log and tune file log does not have AFR but I watched them and it was never a issue it was either close to perfect or a little rich.