2007-2008 GMC Sierra 1500 4.8L, 5.3L 6.0L (Vortec MAX) Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):I will mail my ECM and TCM in to be tuned 15-20hp gains are common with

15-20hp gains are common with 10-15ft-lbs of torque on 89 octane on the 4

we can help your engine perform as optimally as possible

15-20ft-lbs of torque gains are common out of the 5

then our AutoCal is just what you have been looking for

2007-2008 GMC Sierra 1500 4.8L, 5.3L 6.0L (Vortec MAX) Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):I will mail my ECM and TCM in to be tuned 15-20hp gains are common withBlack Bear Performance offers three different levels of custom tuning service for your 2007 2008 GMC Sierra 4. 8L, 5. 3L and 6. 0L (Vortec MAX). 15 20hp gains are common with 10 15ft lbs of torque on 89 octane on the 4. 8L and 5. 3L. The 6. 0L Vortec MAX (VMAX) trucks are able to see a whopping 40+ft lbs of torque and significantly improved overall driving characteristics.. Combine that with improved shift patterns, towing capabilities, throttle