The 3S-GTE is a proper rally engine, and it deserves a proper ECU to match.
The 1993 Toyota Celica 3S-GTE ran the 3S-GTE in one of its most capable AWD configurations, but the factory ECU was never going to let it reach its ceiling. The Tuned By Shawn 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 linear and predictable through the entire boost curve
- Throttle response tuned to your exact injectors and fuel pressure, not Toyota's conservative baseline
- Boost that builds aggressively where you want it without factory ECU intervention
- Consistent behavior at temperature, not the hunting the OEM map produces
- A car that actually responds the way the 3S-GTE was always capable of
Features
- Plug-and-play fitment for 1993 Toyota Celica 3S-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 1993 Toyota Celica 3S-GTE
- Haltech Nexus ECU sold separately
Fitment
1993 Toyota Celica 3S-GTE, Manual Transmission.