That sucks. You know the saying... you gotta pay to play. I hope its something cheap to fix, but it sounds like you might have broke something.
I would think the ESS 625 + drag radials = a lot of stress on the drive train.
No error codes popped up?
///2013 AW 6MT E92 ZCP M3/// Black 359M Wheels/BMW Performance Carbon Fiber Spoiler and Mirror Caps/Arkym AeroSport Front Lip/Turner 15MM Spacers/LUX 8 LED Halo/IND Gloss Black Grills, Gills and M3 Emblem/30% 3M Tint/BMW Interior LED/MusicCar Subwoofer Enclosure/JL Audio 12" W6 Sub and XD600:1 Amp/Euro Sunglasses Tray/Ceramic Coated Megan Racing Exhaust/MS TP's/AFe Dry Air Filter/RPI Intake Scoops/Euro MDM/Feature Coded.