06S281

Stock for now but I was wondering which tune would be best. SCT or Diablosport? Thanks for the input!

Mike@DiabloSport

We have thoroughly developed the tunes for the new GT500 models.

Gains are really strong. The provided tunes will pick up a solid 35+ rwhp on your 12 GT500.
Massive gains of 80+ rwhp can be seen with a pulley, CAI, and the pulley tune

06S281

Thanks Mike! Are the tunes pre-loaded for stock and pulley or should I just wait till I do the pulley and other mods to buy the tuner? thanks

Mike@DiabloSport

Yes, there are preloaded tunes for 91 and 93 octane and 91/93 octane pulley tunes