Originally Posted by slostjoe
Yes this was on the same dyno. About the same boost on each I think the jb4 holds more to redline and peaks a little more. My car had/has no problems all I did was switch tunes....
I hope you realize the PRocede is more the capable of running the same boost as the JB4. The tune wasn't the difference in power, just the actual tuning of the tune. I could dig deeper here and there in if's and's or but's but it will just create chaos among the community.
Eitherway, as long as your happy it doesn't really matter what tune you use.