2019 Chevrolet Silverado 1500 LD 5.3L V8 Flex

REACT is Hypertech’s innovative throttle optimizer which combines Hypertech’s history of award-winning Engineering and exciting performance. The REACT offers fully customizable control over your vehicle’s throttle response. The simple control knob allows you to switch between multiple modes and control the throttle intensity of each mode on-the-fly. The REACT installs easily and is completely plug-and-play, has an automatic setup sequence so no disassembly is required, and doesn’t void your factory warranty. Plus the REACT is internet updateable.

PERFORMANCE version: The throttle curves in this model are designed for the enthusiast who wants a more exciting ride.

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For information on React Tuning Optimizer software click Here

Emissions Certifications: Not for sale or use in California

REACT is Hypertech’s innovative throttle optimizer which combines Hypertech’s history of award-winning Engineering and exciting performance. The REACT offers fully customizable control over your vehicle’s throttle response. The simple control knob allows you to switch between multiple modes and control the throttle intensity of each mode on-the-fly. The REACT installs easily and is completely plug-and-play, has an automatic setup sequence so no disassembly is required, and doesn’t void your factory warranty. Plus the REACT is internet updateable.

TOW version: The throttle curves in this model are designed to improve the power delivery when you’re towing or hauling.

For complete product and feature information click Here

For information on React Tuning Optimizer software click Here

Emissions Certifications: Not for sale or use in California

REACT is Hypertech’s innovative throttle optimizer which combines Hypertech’s history of award-winning Engineering and exciting performance. The REACT offers fully customizable control over your vehicle’s throttle response. The simple control knob allows you to switch between multiple modes and control the throttle intensity of each mode on-the-fly. The REACT installs easily and is completely plug-and-play, has an automatic setup sequence so no disassembly is required, and doesn’t void your factory warranty. Plus the REACT is internet updateable.

OFF-ROAD version: The throttle curves in this model are specifically designed to provide better power delivery in your off-road vehicle in various terrains.

For complete product and feature information click Here

For information on React Tuning Optimizer software click Here

Emissions Certifications: Not for sale or use in California

The Hypertech Speedometer Calibrator can correct your speedometer for non-stock tires and/or gear ratios. The simple on-screen menu quickly guides you through the process, and in a matter of minutes the vehicle's computer is reprogrammed for accurate readings.

For complete product and feature information click Here

Emissions Certifications: Not for sale or use in California

Hypertech's In-Line Speedometer Calibrator Module is a plug-and-play module that corrects the speedometer for non-stock and/or gear ratios. This module is perfect for vehicles with computers that don't allow for tire and gear ratio correction, or to re-calibrate for tire and gear sizes outside the range of programmers.

For complete product and feature information click Here

Emissions Certifications: Not for sale or use in California