I had the Diablo Trinity on my V6 and it was great. Had it loaded with BAMA tunes and used it to monitor the A/F ratio and other random stuff while driving. I think they have the Diablo Ituner now, but I havnt heard of anyone with that.
2013 Mustang GT Grabber Blue 6MT
3.73 Borla S-type Axelback, JBA OR H-Pipe, C&L CAI, AED Tune, Barton Shifter + 2 Post