Well a buddy of mine has a 03 chevy 2500 ecsb with a duramax. He has exhaust, intake, and a 135hp quadzilla programmer that I know of. So we were leaving his house and around 50 he decided to stand on it, and with my truck not tuned to good now I figured that I would try to play. Well by 80 I had caught him and by 90 I had to slow down to not run into him. Then we hit a stop light and it was another story, those things have a lot of bottom end.

 

I imagine those things are way too heavy to be fast on the top end, but good job, sounds like you're making some power to catch up to a tuned DMax.