Lexus SC300 | Toyota Supra 2JZ-GE 1992-1997 Haltech Nexus Wiring Harness (BF29124)

The SC300 2JZ-GE is one of the most respected inline-six platforms in the tuning world, and standalone ECU support for the manual transmission variant starts here.

The Lexus SC300 2JZ-GE platform has a strong tuning community, and standalone ECU support opens what the factory management keeps locked down. The Boomslang PNP Wiring Harness for the Haltech Nexus connects directly to your factory harness without any permanent modifications, giving the Haltech Nexus full standalone engine control. No cutting, no splicing, fully reversible.

Advantages

• Power delivery that's smooth and consistent across the full torque curve
• Fuel and ignition timing calibrated to your actual modifications, not Toyota's conservative baseline
• Idle stability that's locked in regardless of temperature
• Consistent engine behavior across temperature ranges
• A proper tuning foundation for this specific chassis

Features

• Plug-and-play fitment for 1992-1997 Lexus SC300 2JZ-GE, manual transmission
• Compatible with Haltech Nexus R3, R5, S2, and S3 ECUs
• No cutting or splicing of factory wiring
• OEM-quality connectors, USA-built byBoomslang Fabrication
• Fully reversible, factory harness preserved
• For competition and off-road use

The Details

Built specifically for this vehicle's connector layout with OEM-spec connectors and correct wire gauge throughout. Your factory harness stays completely untouched and the car can return to stock at any time. The Haltech Nexus takes full engine control once installed, giving your tuner a clean vehicle-specific foundation to build a proper map from.

Kit Includes

• 1xBoomslang PNP wiring harness for 1992-1997 Lexus SC300 2JZ-GE
• Haltech Nexus ECU sold separately

Fitment

1992-1997 Lexus SC300 / 1992-1997 Toyota Supra 2JZ-GE, Manual Transmission.