First time posting so please bare with me. just installed a BTR STG3 cam,cold air intake and headers in 17 Silverado with a 5.3.First startup was great then after topping off fluids it started setting P163A and P228C and going into reduced power mode havent been able to adjust anything yet due to this.any help on why its setting these code would be appreciated. Its also temporarily in MAF only mode. heres startup tune file Silver 17 BTR GEN V STG 3.hpt