2014-2018 GMC Sierra 1500 4.3L, 5.3L and 6.2L Custom Tuning

Black Bear Performance offers our AutoCal custom tuning service for your 2014-2018 GMC Sierra 4.3L, 5.3L and 6.2L. Gains vary widely by engine type and configuration. 4.3L engines will typically see a 10-15hp/15-20ft-lbs gain. 5.3L engines will typically see a 15-25hp/15-20ft-lbs gain (octane dependent) 6.2L engines will typically see a 25-30hp/30-35ft-lbs on 91+ octane. 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! Additional service offerings include: VATS Delete AFM Delete Torque Management Modification/Removal Considerable Shift and Torque Converter Improvements* Tire/Gear Change Calibration Speed and Rev Limiter Increase Accommodation of Most Modifications (Internal engine modifications, superchargers, turbochargers**, upgraded transmissions, etc). CAMSHAFTS: If you have or plan on an aftermarket cam swap, please contact us first All 2014+ 5.3Ls owners a