I'm not sure what a GMT900 is, but I have an 03 GMC 2500HD Crew Cab w/ a 6.0L turning 37's. My gas mileage is crap. 10.6 Daily, about 13 highway
I'm not sure what a GMT900 is, but I have an 03 GMC 2500HD Crew Cab w/ a 6.0L turning 37's. My gas mileage is crap. 10.6 Daily, about 13 highway
'03 GMC 2500HD CCSB SLT/6.0/AFE Stage 2 Cold Air/Magnaflow Cat Back/ 8in Fabtech Lift/ 37x12.50x17 Cooper Discoverer's/ 17x9 Raceline Wheels/ Debadged/ Vortec Performance Tune (COWL327)
You need to get Nathan to fix the max tire size in the BCM and then we can finish tuning yours.....Nathan you need to get this fixed for him if you can.We are getting service brake system messages because of the tire size!Originally Posted by ShallowPocketz
Vortec Performance Tuned
LQ9 built 4L60 LTs and a billion miles on the speedo!
Man i get 14/17 easy (without Lean Cruise) , with cam (1500 HD , 6.0L) , VE still not tuned yet , of course that is running MAF , going SD (Custom OS) after I play with MAF for a while and Lean Cruise .
Now what is a tune again?
Comp Cam 54-412-11 , Int:265, 212, .522 , Exh: 271, 218, .529 , LSA 114 , Longtube , CAI (Vararam) , TransGo HD2 shift kit , tuned by me with EFILive
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