1999-2007 Classic GMC Sierra 2500/3500 6.0L and 8.1L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):I will mail my PCM in to be tuned if you have or plan

if you have or plan an aftermarket cam swap

We tend to see power gains in the 15-20hp/20-25ft-lbs range and 1-2mpg improvement

Faster Transfer Speeds with Wi-Fi

Due to frequent issues with 6

Submit a security deposit for the scan cable hardware ($400)

1999-2007 Classic GMC Sierra 2500/3500 6.0L and 8.1L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):I will mail my PCM in to be tuned if you have or planBlack Bear Performance offers three different levels of custom tuning service for your 1999 2007 GMC Sierra 6. 0L and 8. 1L. Gains vary by engine type, configuration and vehicle condition prior to the tune. 6. 0L engines will typically see a 20 35hp gain and 25 30ft lbs. 8. 1L engines will commonly see a 30 35hp gain and as much as 50 55ft lbs of torque! Power gains, combined with improved shift patterns, towing capabilities, throttle response and