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Holley pumps have fueled more performance engines than all others and the Holley line keeps on growing
1971-1974 GMC G35/G3500 Van
Street performance
1968-1978 Oldsmobile Toronado
1965-1983 Jeep Wagoneer
Holley EFI Protection Module - Transbrake Input HYPLXLG11M61 Holley pumps have fueled more554 128 is a device that allows for an ECU input to be safely connected directly to the +12V side of the transbrake solenoid. This device protects the ECU input from damaging flyback voltage which occurs when the transbrake is released. Not using this device will cause damage to the ECU over time. Holley is quickly becoming The New Standard In EFI! Holley's HP ECU is standard equipment on the 2013 2014 Chevrolet COPO Camaro and Holley's EFI throttle
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