Holley Terminator X Max EFI Kit Late Gen V LT4 Engines & 6L80/6L90E Transmission Chevy/GMC C/K 1988-1998

With the GDI and VVT support of the Holley Terminator X Max EFI kit, you can bring out the full power of your late Gen V LT4 engine (550-1634-6). This kit puts 1988-1998 Chevy or GMC C/Ks in total control of their engine, whether they got a 6L80 or 6L90E transmission. With it, you get boost and rich/lean safeties, LT drive-by-wire throttle body control, and target closed loop AFR. You can even put boost to the test against time, RPM, gear, and speed. Complete with GM 4L60 and 4L80 transmission control, tuning your truck has never felt better.

Features and Benefits:
- Great for Late GM Gen V LT Swap in Vintage Vehicles
- GM 4L60 and 4L80 Transmission Control
- GM LS and LT Drive-by-Wire Throttle Body Control
- Boost Control: Boost vs Time, Gear, RPM, or Speed
- Nitrous Control: Wet or Dry, Target Closed Loop AFR, & More
- Features Boost & Rich/Lean Safeties
- 3.5” Handheld Tuner Eases Installation via Calibration Wizard
- Tuner has Integrated Data Logging
- Includes Factory Fuel Injectors & Fuel Pumps
- Engine Harness Plugs Directly into Factory LT Sub-Harness
- 4 Inputs: 12v, Ground, 5v, & Frequency; 4 Outputs: Ground & PWM
- Inputs and Outputs are Programmable for Electric Fans & More
- Features GDI & VVT Support
- Genuine Bosch LSU 4.9 Wideband Control
- On-Board Diagnostic LEDs for Wide Variety of Issues
- Built-in 1bar MAP Sensor & Vacuum Hose Adapters
- (4) 1D Tables, (1) 1D Gear Table, (4) 2D Tables, & (1) 2D per Gear Table
- Easy-to-Use Software Suite that Allows Full Laptop Access

To make setup easy, the kit’s 3.5” handheld tuner features a step-by-step calibration wizard. Friendly to expert tuners as well, the software suite grants complete access to tuning via laptop. You even get integrated data logging with it along with on-board diagnostic LEDs, taking the hassle out of monitoring. As a bonus, you can program the inputs and outputs for things like electric fans, boost control solenoids, and progressive nitrous control. Simply plug the engine harness directly into the factory LT sub-harness for easy and thorough tuning at your fingertips!

Vehicle Fitment:
- 1988-1998 Chevy/GMC C/K
- Compatible with 6L80 and 6L90E transmissions
*For late GM Gen V LT4 engines ONLY

Tech Tips:
- For boosted applications, you can disable the internal MAP sensor and use an external LT MAP sensor.
- To identify if your engine is an early or late application, refer to your fuel pressure sensor, located behind the intake manifold. Early sensors have a 4-pin connector, whereas late sensors have a 3-pin connector.

Please Note: The Bosch LSU 4.9 wideband control will NOT work with LSU 4.2 oxygen sensors.