All our tunes are custom and can always be tweaked to anyone's liking. They are custom designed by our tuner and run on the Dynojet with vehicles that we purchase. Tunes are then adjusted for various strategy codes. We also upgrade our tunes on a fairly regular basis ie: Stage 4, 4+ and 4X reaching for the pinnacle. They are not "canned" tunes that could be used on any particular model/engine across the board. Our goal is to make tuning adjustments safely for as many parameters as possible and still maintain great daily driver integrity. Performance Driven, Race Proven by 1000's of dyno runs and time slips.