Jerry and wayne also go all over the us to do tunes,, example if you and freinds of 5 or more want a tune they will come to you, they also have a Justin in south fl that can tune your car crossfire or Meredes V6 or V8 I have used them and have no problems,, they also retune your fan (fan mod) to keep the car about 10 degrees cooler, that equels the neddle being below the 1/2 way mark. jim