Holley EFI 550-943 Terminator X Max Ford MPFI Kit w/ Transmission Control

☆☆☆☆☆ reviews

US$799.98
Price when purchased online
Free shipping Free 30-day returns

Sold and shipped by
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
US$799.98
Price when purchased online
Free shipping Free 30-day returns

How do you want your item?
You get 30 days free! Choose a plan at checkout.
Shipping
Arrives Nov 13
Free
Pickup
Check nearby
Delivery
Not available

Sold and shipped by
Free 30-day returns Details

Product details

Management number 254246250 Release Date 2026/11/07 List Price US$799.98 Model Number 254246250
Category

Universal MPFI Main Harness - 92-97 4R70W Transmission Control Harness- Ford Spaced EV1 Injector Harness, 3.5 in. Touchscreen Included;<br><br>Take control of your conventional Ford engine with Terminator X! Don't settle for a factory ECU with a cumbersome tuning interface or pre-programmed tuning chip when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley EFI at a budget-friendly price! Terminator X features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive NOS control, and much more. Terminator X comes fully loaded with base maps for common V8 engine combinations to get you out of the garage and on the road/track fast. The 3.5 in. touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building a budget beater or a boosted race car, Terminator X has the features and technology you need at a price that won't break the bank!;

  • Plug and play Ford V8 engine control, such as the 302w, 351w or 460 Big Block.
  • Includes Ford Spaced EV1 Injector Harness
  • Ford 4R70W Transmission Control Harness (Terminator X Max Only)
  • High Impedance Injector Drivers will safely power most Stock injectors, and Holley EFI Injectors. Injector support chart provided in the instructions (Will not control Low Impedance Injectors)
  • All of the new Terminator X systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.
  • Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th â€" Â1/4 and 3/16ths) - or for Boosted applications, you can disable the internal MAP sensor, and utilize an external MAP Sensor, the harness comes with the connector terminated, making the in
  • MAP Sensor vacuum hose adapters (1/8th â€" Â1/4 and 3/16ths)
  • Plug and plug ignition capability with Dual Sync and HyperSpark Distributors, adapter 558-323 required for HyperSpark Distributors.
  • 4 Inputs â€" 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
  • Boost Control â€" Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
  • Nitrous Control â€" Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
  • Advanced Tables â€" 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table, can be used for any custom tables you can dream up, such as Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety!
  • On-Board Diagnostic LEDS for: ECU Power â€" Engine Run â€" Wideband Status â€" TPS Calibration â€" Crank Signal â€"Cam Signal. Allow you to identify any Critical engine issues at a glance
  • The included 3.5" Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any domestic V8 engine. Additionally the handheld provides internal data-logging and a fully customizable gauge display.
  • The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDS must face up!
  • Plug and play compatible with more Holley EFI accessories such as; analog style gauges, shift lights, various modules, and coming soon, 12.3" digital dash support!
  • Free EFI Tuning Software for complete control of your Terminator X power plant
Compatible cars Ford V8 engine
Vehicle make Ford
Fuel injection accessory & part type Universal MPFI Main Harness - 92-97 4R70W Transmission Control Harness- Ford Spaced EV1 Injector Harness, 3.5 in. Touchscreen Included
Brand Holley EFI
Automotive parts division Performance
Vehicle fitment type Specific
Items included 3.5 in. Touchscreen
Accessories 3.5 in. Touchscreen, Ford Spaced EV1 Injector Harness, Ford 4R70W Transmission Control Harness, Bosch LSU 4.9 wideband, vacuum hose adapters (1/8th", 1/4" and 3/16ths), EFI Tuning Software
Features Easy To Use
Series Terminator X
Model 550-943
Weight 8.45 lb
Vehicle type Car
Multipack quantity 1

Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Customer ratings & reviews

0 out of 5
☆☆☆☆☆
0 ratings | 0 reviews
How item rating is calculated
View all reviews
5 stars
15% (0)
4 stars
30% (0)
3 stars
15% (0)
2 stars
8% (0)
1 star
32% (0)
Sort by

There are currently no written reviews for this product.