Hello just wondering what part could cause a truck to run good one time you start the truck and then run not so good the next time. I've got an quad xzt module on the truck and it either has great power or it makes alot of what sounds like injector chattering and the power isn't much more than stock, doesn't boost over 35 pounds and just has high egt, but still runs smooth. I know it's not the module since i hooked it up to my dad's and runs fantastic. I've messed with all conectors and added dielectric grease and bent them slight to increase contact. What to do next?

Anybody with some suggestions?

All trucks are setup different from the factory some run great and others are dogs. Just luck of the draw man take it in and have them run some drb tests on it tell them its not running up to par and i should be a warranty deal. Get them to test all the injectors and any codes that it may have.