I took my 09 GXP to the 1/4 mile track for the 1st time this Saturday. I've had a bit of work done to my G8 and it is about 500 RWHP with 485 'ps torque. My Bridgestone Potenzas are certainly not adequate for getting off the line well. Low 14s was the best I could do. What are you running on the rear wheel/tire size?
2009 G8 GXP - M6
Modifications: Katech LS9X clutch, BC Racing coilover set, BMR suspension bushing kit, "Mystery" cam from Dragon Race Eng., LT headers, Squash Performance Series 1 ULTRA Dual Pump, Deatschwerks 90 lb. injectors, Procharger D1SC, MAC Autosport E85 tune by Nic. 698.7 RW HP and 589.77 RW TRQ.