Ok long story short....
The car was perfect tuned last year, now I have changed the headers(from 1 7/8" to 2" american racing),intake(Fast 92mm to Fast 102mm) and throttle body(LS2 to NW 102mm).
Haven`t changed anything else.
Now the the LTFT shows +25% bank 1 and -18% bank 2 at idle, and down to 1-2% when driving.
My guess was a injector problem because thats to much for air leak in the exaust, or?
LSX 6.2,AFR 210cc heads,F2 procharger....
Please check the log