Quote Originally Posted by grabberblue427R View Post
You need to return it to Roush. They have there own tune in it and a aftermarket tuner will damage their tune. Call Joe at roush
Performance and he can tell you what you need. I just modified my 2010 427R and and their tune was great. They could also tell you if a aftermarket will work with theirs.
Ummmmm..........No Sir.
See this dirty custom painted 427 Roush? It has a pulley, Nitrous and a PSR Tuning custom dyno tune.
The stock computer is just fine.