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Thread: Calling all 2500hd owners

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  1. 05-15-2009 10:03 AM #1
    COWL327's Avatar
    COWL327
    COWL327 is offline Senior Member
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    Quote Originally Posted by ShallowPocketz View Post
    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
    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!
    Vortec Performance Tuned
    LQ9 built 4L60 LTs and a billion miles on the speedo!
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  2. 05-15-2009 12:49 PM #2
    Chevy366's Avatar
    Chevy366
    Chevy366 is offline Senior Member
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    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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