2017 Toyota Tundra 5.7L 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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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 tire sizes and/or non-stock rear 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.

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Emissions Certifications: CARB E.O. D-260-45