Haltech Nexus S3 ECU & Toyota Supra 7M-GTE 1987-1988 Plug 'n' Play Adapter Harness Kit (HT-650932)

The 7M deserves better than a 30-year-old ECU trying to keep up with what you've built.

The Toyota Supra 7M-GTE shares the same factory ECU limitations that have frustrated 7M owners for decades: conservative timing, a knock strategy that pulls way more than it needs to, and zero flexibility for modifications. The Tuned By Shawn PNP Wiring Harness Kit 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

• Timing that advances where it should instead of pulling at the first sign of heat
• Boost that builds and holds exactly where you dial it in, not where Toyota's knock strategy allows
• Throttle response that matches what the engine is actually capable of
• A tune built around your exact modifications, not averaged factory parameters
• Confidence that what happened on the dyno is what happens on the track

Features

• Plug-and-play fitment for 1987-1988 Toyota Supra 7M-GTE, manual transmission
• Compatible with Haltech Nexus R3, R5, S2, and S3 ECUs
• No cutting or splicing of factory wiring
• OEM-quality connectors, USA-built by Boomslang 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

• 1x Boomslang PNP wiring harness for 1987-1988 Toyota Supra 7M-GTE
• Haltech Nexus S3 ECU
• Air Temp Sensor - Small Thread Thread: M14 x 1.5

Fitment

1987-1988 Toyota Supra 7M-GTE, Manual Transmission.