Hey guys, Got a buddy with a 06 duramax. Only mods are cai and hypertech hand held. It runs ok but cant run with my truck. I dont see no reason why that truck shouldnt fly. The power is not really there and it shifts too fast and erratic at WOT. Does anyone do mail order tunes on these trucks?? If not which is the best programmer to use?? Help please.

Jeremy

 

contact this guy http://www.mcratracing.com/index.html

 

Also, PM vortecfcar on here. He is BIG into tuning Dmaxes too.

 

are you using hptuners or efi?

 

It's my buddies truck. Only has Hypertech handheld now.