I just purchased an 03 duramax 4x4(first diesel truck). i've Always been a chevy fan. All my friends have pstrokes or cummins, I wanted to try and even them out.
Rightaway I cut the muffler off and also installed a edge juice/attitude. So far I am extremely happy with my truck. I have yet to race anyone but am getting very antcy. I am open to any helpful tips that will help me get to know my truck better, increase power, and keep me from tearing something up.:)

Welcome and congrats on your new ride.