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135mJ of spark energy when used with the HyperSpark Ignition Box
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Holley HP EFI ECU and Harness Kits 550-604 motorcyle-exhaust 135mJ of spark energy whenMPFI HP ECU AND HARNESS KIT 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
