please advise
 

Please advise for upgrades for 2002 GMC 3500 DRW crew cab 4x4 with 100,000 mile older gentelman owned. LB7 with upgraded injectors.
I will be carying a 5500lb double slide truck camper and pulling a 22' whitewater jet boat 4700lbs on a tanden axel trailer.

This is what I want to install:
Cold air intake
Programer that is ajustable and will monitor gas milage
size of exhaust upgrade.

please include make and model of reccomended upgrade and whre to purchace for best price if you know.

Please copy your responce to my email
rjchristensen@q.com

Thank you very much!
Rick

you can modify the stock intake for free
programmer for what your looking for any generic one will do
exhaust a four inch will do well