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economical
By eliminating hot spots
GM 93740319
The drive gear refers to the gear that is on a transmission’s output shaft
all big blocks except drag
HP EFI ECU & Harness Kits 1999 pontiac firebird economicalLooking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more! Got a stock LS engine? Simply download a base map and you're on your way. Got a turbocharged, nitrous fed LS engine on water meth? This HP EFI kit can control that too! Stop re flashing your factory ECU every time you make a performance modification. Get Holley EFI today!
