2002-2006 Chevrolet Avalanche 5.3L and 8.1L Custom Tuning Active Fuel Management Disable Speed and Rev Limiter Increase

Speed and Rev Limiter Increase

Black Bear Performance offers three different levels of custom tuning service for your 2007-2008 GMC Sierra 4

AFM Delete

2014-2019 will typically see a 25-30hp/30-35ft-lbs gain

2002-2006 Chevrolet Avalanche 5.3L and 8.1L Custom Tuning Active Fuel Management Disable Speed and Rev Limiter IncreaseBlack Bear Performance offers three different levels of custom tuning service for your 2002 2006 Chevrolet Avalanche 5. 3L and 8. 1L. 20 25hp, 15 20ft lbs of torque gains are common out of the 5. 3L variation and 8. 1L engines can see a monster 50+ ft lbs of torque. Combine that with improved shift patterns, towing capabilities, throttle response and even fuel economy in many cases and you'll have what feels like a whole new vehicle! Due to frequent