Hey all, I spent the entire past winter doing a full build on my 18 M6 ZL1, full bolt ons heads, cam and clutch. The car was at my tuners for 2 months because he was having issues tuning it, throttle closing etc... Well I finally got it back and the drivability is not good at all, the throttle drops and almost stalls when I come to a stop and sometimes on a hard 2-3 pull it seems to fall flat on its face as soon as I hit 3rd. I honestly dont want to bring it back to the original tuner nor do I have the knowledge to try to tune this thing myself without alot of help. Who would know how to tune a built LT4 remotely that can get this thing to run right? I will attach the current tune thats in the car below as well as a full mod list. Any help is greatly appreciated. Thanks
FED ported and milled .030 heads
226/242 w/ 38% fuel lobe cam
Kong Ported supercharger
Nick Williams 103mm TB
Roto-Fab big gulp
Cordes aux fuel system (return style)
2" kooks headers w/ off road pipes
NGK TR71x gapped .030
9.17 lower and 2.3 upper pulley
Cordes bumper ice tank
160 thermostat
MM catch can
Monster LT1s triple disc clutch
ECM tune.hpt