* All prices are in AUD incl. GST.

HP EFI ECU & Harness Kits


Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU. The HP allows you to accurately control the fuel and ignition of your engine along with additional controls for nitrous, boost or water meth.

Part No. Description Price Shop
HL550-600 Multi-Point EFI SystemsECU & HARNESS 4BBL TBI $2,504.43    Add to Cart   
HL550-601 Engine Management Systems HP ECU & Harness for GM TPI & Holley Stealth Ram Kit $2,796.25    Add to Cart   
HL550-601N Engine Management Systems HP EFI ECU & Harness for GM TPI & Holley Stealth Ram O2 Sensor HEI Adapter Kit $3,032.26    Add to Cart   
HL550-602 Engine Management Systems HP ECU and Harness for LS1 and LS6 Kit $2,890.68    Add to Cart   
HL550-602N Engine Management Systems HP EFI ECU Kit For GM LS1 Engines NTK Wideband Oxygen Sensor Holley Each $3,139.72    Add to Cart   
HL550-603 Engine Management Systems HP ECU/Harness LS2 LS3 LS7 USCAR/EV6 Style Inj. Harness 58X Crank Sensor Kit $2,890.68    Add to Cart   
HL550-603N Engine Management Systems HP EFI ECU Kit For GM LS2/LS3 Engines With 58x Crank Sensor NTK O2 Sensor Each $3,139.72    Add to Cart   
HL550-604 Engine Management Systems HP ECU and Universal V8 MPFI Harness Kit $2,796.25    Add to Cart   
HL550-604N Engine Management Systems HP EFI ECU Kit Universal V8 MPFI Fit NTK Wideband Oxygen Sensor Holley Each $3,032.26    Add to Cart   
HL550-605 Engine Control Unit Holley HP EFI Harness Kit $2,796.25    Add to Cart   
HL550-605N Engine Management Systems HP EFI ECU Kit Universal Un-terminated Ignition Adapter Harness NTK Holley Each $3,032.26    Add to Cart   
HL550-606 Engine Management Systems HP EFI ECU and Harness Kit Use With Ford Multi-Point EFI Holley Each $2,729.55    Add to Cart   
HL550-606N Engine Management Systems HP ECU and Harness Kit Use With Ford Multi-Point EFI NTK O2 Sensor Holley Each $2,978.57    Add to Cart   
HL550-607 Engine Management Systems HP EFI ECU and Harness Kit Use With GM LS2/LS3/LS7 Engines Holley Each $2,890.68    Add to Cart   
HL550-607N Engine Management Systems HP EFI ECU and Harness Kit Use With GM LS2/LS3/LS7 Engines NTK O2 Sensor Each $3,139.72    Add to Cart   
HL554-113 Engine Control Unit Holley HP EFI Each $1,835.40    Add to Cart   

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