2008-2009 Chevrolet Express 4.8L, 5.3L, and 6.0L Custom Tuning Tune Service:Traditional [$355] 1L vehicle used for heavy

2008-2009 Chevrolet Express 4.8L, 5.3L, and 6.0L Custom Tuning Tune Service:Traditional [$355] 1L vehicle used for heavyBlack Bear Performance offers three different levels of custom tuning service for your 2008 2009 Chevrolet Express 4. 8L, 5. 3L, 6. 0L (4 speed). 15 20hp gains are common with 10 20ft lbs of torque on 89 octane for the 4. 8L and 5. 3L, while 20 25hp and 25 30ft lbs gains for the 6. 0L. 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

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