Hypertech ThermoMaster Computer Chip 121382 - 91 Corvette 350 TPI

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Hypertech ThermoMaster Power Chips replace your stock PROM, which holds the settings for fuel flow and spark advance. This is a Stage 2 chip that optimizes the spark and fuel curve s for max performance. The ThermoMaster Power Chip is designed for use with a 160 deg. thermostat and premium pump gas (91 Octane or better). Maximize the performance of your ride with a Hypertech ThermoMaster Power Chip! Computer Chip ThermoMaster Automatic Transmission TPI Small Block Chevy Chevy Corvette 1991 Sold as each MPN: 121382 State Restrictions: CA Show more