1999-2000 Chevrolet Express 4.3L and 5.7L Custom Tuning Tune Service:Scan Cable [$815] ($400 Refundable Deposit included) 0L engines will typically see

0L engines will typically see a 20-35hp gain and 25-30ft-lbs

Black Bear Performance offers our AutoCal custom tuning service for your 2010-2020 Chevrolet Express 4

1L engines can see a monster 30-35hp+

*Transmission tuning on 2019-2020 8- and 10-Speed Transmissions is available

7L up to 30-35hp on a 7

1999-2000 Chevrolet Express 4.3L and 5.7L Custom Tuning Tune Service:Scan Cable [$815] ($400 Refundable Deposit included) 0L engines will typically seeBlack Bear Performance offers three different levels of custom tuning for your 1999 2000 Chevrolet Express 4. 3L and 5. 7L. From bone stock to heavily modified, we can help your engine perform as optimally as possible. We tend to see power gains in the 10 15hp range on a 4. 3L and 15 20hp on a 5. 7L along with a 1 2mpg improvement depending on vehicle condition and configuration. Other improvements range from improved idle smoothness to better shift