Trying to figure out why my STFT is so far off. I have flashed my car back to Stage 0 map from Cobb. These are my fuel trims for STFT LTFT HPFP LPFP, something seems off to me and i cannot figure out why, i have replaced all spark plugs gaped at .020" (NGK 95770) and i have replaced injectors 1,2,3,6 with new index 12 injectors. injectors 4,5 are index 12 but have about 20-30k on them. I originally thought the STFT was so far off because of a bad tuning map done on the dyno from the previous owners time with the car. But now im beginning to think this is a hardware issue not software. I looked in each cylinder with a borescope for injector leakage. I unplugged all the injectors and turned the motor over and saw no leakage in the cylinders. I also ran a leak down test and saw only 3.5-8% leakage in the cylinders. What could be causing the difference in STFT bank 1 & 2? here are the maps from the stage 0 map holding at 2500 rpm and just at idle.
https://datazap.me/u/watermelon13/log-1521829947?log=1&data=2-15-16
https://datazap.me/u/watermelon13/log-1521829947?log=1&data=2-15-16