Terminator LS MPFI Kit
Type: Terminator MPFI Kit

Get 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 required!
Features:
- For 1997 to 2007 4.8/5.3/6.0 truck engines with 24x crank reluctor
- Kit includes everything you need to control your stock or mild LS
- Bosch wideband oxygen sensor included
- Controls fuel and spark
- Pre-calibrated for no-hassle installation and tuning
- Fully adjustable through included 3.5” full color touchscreen
Specs:
- Accelerometer Support: Yes
- Boost Control: Yes
- Brand: Holley EFI
- CAN-BUS Support: Yes
- Category: Fuel Injection - EFI
- Coil Per Cylinder Ignition Support: Yes
- Color: Black
- Crank Reluctor: 24x
- Datalogging Support: Yes
- Distributor Included: No
- Dry Nitrous Control: Yes
- e85 Support: Yes
- EGT Support: Yes
- Emission Code: 3
- Forced Induction Support: Yes
- Fuel Filter Included: No
- Fuel Hose Included: No
- Fuel Injectors Included: No
- Fuel Pressure Regulator Included: No
- Fuel Pump Included: No
- Grade Type: Performance
- Handheld Included: Yes
- Idle Air Control Motor Included: No
- Ignition Timing Control: Yes
- Individual Cylinder Fuel Corrections: Yes
- Injector Connector: Multec 2
- Intake Manifold Included: No
- Knock Retard Support: Yes
- Mounting Hardware Included: No
- Multi-Stage Nitrous Control: Yes
- Product Type: Terminator MPFI Kit
- Progressive Nitrous Control: Yes
- Self-Tuning: Yes
- Terminator LS Options: Fuel, Spark
- Throttle Position Sensor Included: No
- User-Tuneable: Yes
- Wet Nitrous Control: Yes
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Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.
Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.







