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Black Bear Performance offers three different levels of custom tuning service for your 2007-2008 GMC Sierra 4
9 LSU wideband sensor and weld-in bung included
All 2007+ 6
0L engines can see up to 30hp
15-20hp gains are common with 10-20ft-lbs of torque on 89 octane for the 4
2002-2006 Chevrolet Avalanche 5.3L and 8.1L Custom Tuning Active Fuel Management Disable Black Bear Performance offers threeBlack 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
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