OK, having owned a Duramax with a stack on it I can tell you that they do not smoke very much stock (or with Banks programers). If it rolled coal it had something done to it. You would have known if she really got on it cause it would have been MOVING. Those trucks are stupidly quick (for a diesel truck). Just adding a programmer can have those trucks turning out 450+ hp and 750+ lb-ft of torque. There's nothing like getting 18+ mpg while pulling 13k lbs and smoking out the intersection as you pull away from the light.
Damn, I miss that truck......
