I want to do some upgrade to my truck but not sure to do next. The truck is a 4x4 CCSB 2003 with aurora 3000, 4" exhaust, FASS150, AFEII, ARC elbow, grid delete, ATS power programmer with a MP8, ATS converter, and components. It runs good but I want more power. Any suggestions?

 

Throw the A5k underneath for twins. Go larger injectors... and be sure you have the fuel mods to support them (cp3 mod). Swap the ATS programmer for a number of other things... smarty/bullydog/PPE/diablo predator/TST (keep the mp-8)

That is a good place to start from.

 

I have consider using the Smarty and upgrading injectors...when upgrading injectors which ones should I go with. Thanks in advance for the advice.

 

If it were me it would be ddp 90s

 

That turbo will surge really bad with too much fuel - especially low end fuel. You don't want to add injectors unless you are going to do something else for a turbo. When I put 1.8 injectors with the 3k, I couldn't even tow anymore.