1999-2000 Chevrolet Express 4.3L and 5.7L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):Unblemished PCM (<5% paint missing) [+$125] If the answer to any

If the answer to any of those questions is YES

Any equipment that is held beyond a reasonable period of time will result in the partial or full forfeiture of your security deposit

Contact us for an estimated range of gains for your vehicle type

Open the EFILive Scan and Tune application

1999-2000 Chevrolet Express 4.3L and 5.7L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):Unblemished PCM (<5% paint missing) [+$125] If the answer to anyBlack 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