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558-455 Holley EFI 2009+ GM 4L60E Transmission Control Harness
$257.95Expanding on our Transmission Control options from Holley EFI. This new harness 558-455 from Holley EFI provides plug and play transmission control for the 2009+ GM 4L60 when used with a Dominator ECU. The 2009+ GM 4L60E contains an internal turbine... -
558-124 Holley EFI Holley EFI Ford Coyote Ti-VCT Sub Harness (2011-2012)
$250.95Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your weekend road race warrior powered by a coyote junkyard engine with locked cams? Unlock the full potential... -
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550-918 Holley EFI Terminator X Max LS2/LS3 and Late 58x/4x LS Truck MPFI Kit with Transmission Control
$1,828.95Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley... -
550-919 Holley EFI Terminator X Max LS1 24x/1x MPFI Kit with Transmission Control
$1,828.95Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley... -
550-916 Holley EFI Terminator X Max LS1 24x/1x MPFI Kit with Transmission Control
$1,828.95Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley... -
550-920 Holley EFI Terminator X Max LS2/LS3 and Late 58x/4x LS Truck MPFI Kit with Transmission Control
$1,799.95Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley... -
550-928 Holley EFI Terminator X Max LS2/LS3 and Late 58X/4X LS Truck MPFI Kit with DBW Throttle Body and Transmission Control
$1,999.95Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley... -
550-927 Holley EFI Terminator X Max Early Truck 24X/1X LS MPFI Kit with DBW Throttle Body and Transmission Control
$1,999.95Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley... -
550-926 Holley EFI Terminator X Max LS1 24X/1X MPFI Kit with DBW Throttle Body and Transmission Control
$1,999.95Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley... -
553-111 Holley EFI Holley EFI 12.3" Pro Dash
$2,375.95Trust. Whether it's your engine builder, team members or EFI System, trust is earned, not given.When your expensive engine, sponsorship and reputation are on the line, trust your engine monitoring to the Holley EFI 12.3" Pro Dash!The Holley EFI Pro Dash... -
550-614 Holley EFI Terminator LS MPFI Kit
$3,215.95Get all the great features of Terminator self-tuning EFI in a bolt-on system for GM's popular LS engines! The 550-614 kit controls fuel and spark through the Terminator's new 3.5" touchscreen! Install, answer a few basic questions and drive. No laptop...
