1998-2000 Chevrolet Silverado 4.3L, 5.0L, 5.7L and 7.4L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):Unblemished PCM (<5% paint missing) [+$125] 2L engines require 91+ octane

2L engines require 91+ octane for optimal performance and efficiency

High-Speed Standalone Data Logging

2L engines can see up to 30hp on 91+ octane fuel

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Black Bear Performance offers three different levels of custom tuning service for your 2007-2008 GMC Yukon 4

1998-2000 Chevrolet Silverado 4.3L, 5.0L, 5.7L and 7.4L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):Unblemished PCM (<5% paint missing) [+$125] 2L engines require 91+ octaneBlack Bear Performance offers three different levels of custom tuning service for your 1998 2000 Classic Chevrolet Silverado. Gains vary widely based on engine size but can vary from 10 15hp on a 4. 3L up to 30 35hp on a 7. 4L. From bone stock to heavily modified, we can help your engine perform as optimally as possible. Other improvements range from improved idle smoothness to better automatic AND manual shift performance, improved throttle response