Has anyone used Ralph & Johns shop in Brooklyn NY to have their Jeep tuned? I got their number off the Diablo website and scheduled an appointment for next Wednesday ... The guy told me it would be $150 an hour to tune on the dyno and it would take 2 hours to tune my 5.7 Hemi ...and I should be looking at 40 more horsepower on top of my Diablo tune... So any feeback on this is greatly appreciated guys