...from what I read the mega squrt is phonomal. From what I read about the greddy tho... its like the safc. It works on our cars... but its not ment for it. It can be a really good tuning tool but but going mega squrt is proly a better idea. Although thats how I feel, but if you want to try it go get it and prove us all wrong. I mean that in a positive way not in a smart ass way.