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    Holley Pro-Jection

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    • Product Details

      Part No. 534-117

      Warranty Details (90 DAY REPLACEMENT IF DEFECTIVE)

      Pro-Jection D electronics contain a basic performance fuel curve that has a wide range of adjustability. D electronics monitor engines RPM and processes a stream of information inputs from the throttle position and engine temperature sensors. From these inputs the "D" system automatically changes, adjusts and modifies the fuel delivery to maintain the fuel curve. Further refinement of the fuel curve is possible by adjusting the knobs on the ECU. The payoff for all this electronic capability is excellent start up, driveability, power and economy. D Pro-jection is designed to be used on stock, or mildly modified engines with at least 15-inch vacuum at idle (A/T idling in gear).

      Product Features:

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