My car is leaning out in 3rd and 4th gear. between 12.0 and 12.7 on the wide band. I got a flash tune on my 2.2 for 12 pounds of boost. When I started it was fine. Where it was supposed to be between 11.0 and 11.5 on the wide band at full boost. Now I would say 3 or 4 months later its leaning out. I believe this is a fuel pump problem? Does anyone know if you can just put a Walboro 255 Fuel Pump in place of the stock?? Or do I need a return fuel system?? Any other suggestions??

 

Did you up size the injectors at least to the size that are stock in the SS when you added the turbo ?
If not they maybe doing to much work and are getting sluggish,(Cant keep up with the demand)

 

Yea when I put my turbo on it was a kit. so my injectors were upgraded from stock to 39 pound injectors. Though the kit is rated at 8 pounds of boost and my tune is setting me at 12 pounds. Do you think that the injectors can't handle the demand for the 12 pounds of boost?? Thanks for your help