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Engineered to regulate extreme flow volumes generated by racing fuel systems
and baffles to reduce fluid slosh
Muffler Features:
One 3/8" NPT inlet and two 3/8" NPT outlets
Suit Primary Bowl
Holley HP EFI ECU Only (HO554-113) Wheels & Tyres Engineered to regulate extreme flowHO554 113 EFI ECU ONLY HP STYLE With USB Cable & Software Part Number: HO554 113 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
