Hypertech ThermoMaster Computer Chips Air Conditioning Compressors Give your marine engine the

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Hypertech ThermoMaster Computer Chips Air Conditioning Compressors Give your marine engine theThe Hypertech ThermoMaster Computer Chips (ref 0498) is a classic ECM performance upgrade from Hypertech that replaces your vehicle's stock calibration EPROM with a professionally tuned chip. For a wide range of GM, Ford, and Chrysler vehicles with OBD I and early OBD II ECUs, the ThermoMaster optimizes air fuel ratios, ignition timing, and rev limiters for real world power gains. It's the original plug in performance chip no wires, no modules, no