Holley Digital Dash GPS USB Module 554-140 Have you been searching for a reason to discard your old noisy mechanical speedometer cable? If so, the Holley GPS Module for our 7" Digital displays should be the next addition to your project vehicle...

Holley EFI 7.500"Digital Dash 553-106 The Holley EFI Digital Dash is completely customizable with a variety of gauge and indicator screens that can be programmed to display any parameter you need. The dash also offers a virtual switch panel, user...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-905 - 58x/EV6 (Without Hand-Held) Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control...

FiTech Ultimate LS EV1 Fuel Injector Harness 70050-4 EV1 fuel injector subharness for use with FiTech Ultimate LS. 2 needed per engine, sold individually.

FAST Wireless Air/Fuel Ratio Meter 170302 - Dual Sensor The state-of-the-art FAST® Wireless Air/Fuel Meter Kits measure your engine’s air/fuel ratio withprecision accuracy, all from the convenience of your smartphone! FAST® has...

FAST Wireless Air/Fuel Ratio Meter 170301- Single Sensor The state-of-the-art FAST® Wireless Air/Fuel Meter Kits measure your engine’s air/fuel ratio withprecision accuracy, all from the convenience of your smartphone! FAST® has...

Holley EFI 7" Touchscreen Standalone Digital Dash- 553-109 Have you been looking for a dash solution for your vehicle, but just cannot find anything you like or that is cost effective? No need to look any further as Holley has created a full color touch...

FiTech Ultimate LS EV6 Fuel Injector Harness 70050-8 EV6 fuel injector subharness for use with FiTech Ultimate LS. 2 needed per engine, sold individually.

Holley EFI 6.86" Pro Dash Touchscreen- 553-112 Holley's new 6.86" Pro Dash delivers over 200 monitoring channels of reliable real-time data in a more compact, full HD package suitable for nearly any motorsports application. Be assured that the Holley EFI...

Holley EFI 12.3" Pro Dash Touchscreen- 553-111 Trust. 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 Terminator X Max GM LS Standalone ECU & Wire Harness 550-935 - 58x/EV1/Trans Control/DBW Take 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...

Holley Terminator X Max GM LS Standalone ECU & Wire Harness 550-934 - 24x/EV6/Trans Control/DBW Take 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...