F150 Ecoboost Performance
Alright guys, I am running Mike's 91 Perf/Tow tune from 5 Star, and love it. Truck has about 4000 miles, and I feel I am having some spark issues, haven't pulled the plugs yet, but I have heard some crazy gap stories, as well as cracked porcelain, etc. Also, the inside of the tail pipe is full...