Re: Throttle Body Bored to 85mm today!
If they do variable diameter porting of your TB, so it is stock diameter at the opening and gradually increases to 85 mm, it will run great on a stock tune. If they just port it out to 85 mm, you will need a tuner, and either datalog and tune it yourself, or get a CMR tune on a dyno; this will set you back about $1.000 for the Predator and cmr dyno tune. I'd be leary about going with a company who's never doen one before. I got the dyno tested, well proven Modern Muscle CNC ported 85 mm with variable porting, which is a great bolt on.
2006 GC Overland QD II
5.7 Hemi, Modern Muscle 85 mm CNC ported TB, Apexi super voltage stabilizer, Billet Tech. Catch Can, Koni FSD shocks/struts, SRT8 sway bars, Cooper Discoverer SRX 255/65/17, Amsoil fluids, Diablosport Intune CMR tuned by Hemifever tuning.