Got the Mountune MP215 installed on my FiST. Highest PSI I've seen is 23.5. Car definitely feels peppier, it's subtle but noticeable. I definitely like it. You can tell it improves the entire powerband or at least feels as if it does. I've driven a FiST with the Cobb Stage 1 93 octane and this feels comparable, although I do miss the torque limiter being removed from 1st / 2nd gear. I'm running 93 octane which helps a bit I'd assume. Randy said that the dyno they posted for the mp215 was with 91.
Dealership gave me no issues with the install and handled the registration for me. There was a scratch on the hood of the car when I got it back but they took care of it without question - scratch was completely removed and looks like when I dropped it off. Charged me $100 for install which from what I read is pretty good considering I've seen some around $150 and as high as $250 for the full install. Also got the MP215 on Black Friday sale so all and all, I'm happy.
Dealership gave me no issues with the install and handled the registration for me. There was a scratch on the hood of the car when I got it back but they took care of it without question - scratch was completely removed and looks like when I dropped it off. Charged me $100 for install which from what I read is pretty good considering I've seen some around $150 and as high as $250 for the full install. Also got the MP215 on Black Friday sale so all and all, I'm happy.