Have a 2012 GT automatic. Gen 2 Aluminator short block 11.0 to 1 comp, mild port Gen 2 heads, 2.9 Whipple Gen 4, stage 2 kit, 132mm TB, long tubes, ID1300x2 injectors, Boss cams & Pac springs, return fuel system.
Car was tuned and running fine (by me), then after about 2-3 months of driving car...