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SuperTuner is a performance handheld tuner designed for General Motors vehicles. It offers performance tuning across the entire RPM range.

The features and benefits of SuperTuner include performance tuning across the entire RPM range, calibration of speedometer, odometer, and shift points, improvement of transmission shift points and firmness, adjustment of vehicle speed limiter and engine rev limiter, advanced transmission tuning features, and user adjustment for normal driving.