When I got my CAI from Steeda my tuner did not have a tune on it wich I did not know until after I installed there CAI, don't ask it was not my fault. Well I had to drive my car that day and after all that I was not going to put the stock CAI back on so I drove the car. When started up it would rough idle for a minute then it was fine and it never threw a engine code, other then that the car drove fine with out the tune.
2016 5.0 Deep Impact Blue 300A pkg, New Orleans.
MODS: Roush axle-back exhaust, AEM DryFlow filter, Gloss Black PP wheels, Ford Racing Strut Brace, Track Pack spoiler.
New Orleans FaceBook Mustang Group