Haltech Nexus S3 ECU
The Haltech Nexus S3 is a mid-range wire-in engine control unit (ECU) from Haltech. It has 8 injector and 8 ignition outputs, support for up to 8 cylinders, 2 drive-by-wire throttle channels, 1 onboard wideband lambda input and knock control. List price is US$2,265. 23 sellers list it from US$1,899 to US$3,105.
Prices checked . Specs from Haltech's published data.
Key specs
DBW = drive-by-wire throttle channels · λ wideband = onboard wideband lambda (oxygen sensor) inputs · CAN = controller area network buses.
Features
- ✓Drive-by-wire
- ✓Onboard wideband
- ✓Knock control
- ✓Flex fuel
- ✓Traction control
- ✓Launch control
- ✓Boost control
- ✓Gearbox control
- ✓Onboard logging
- ✕Ethernet
- ✓USB
- ✕Built-in display
✓ published · ✕ not offered · ? not published. Some features, like traction control and launch control, mean different things by brand. See the glossary.
Details
- Highlights
- Elite 2500 successor; onboard wideband, dual DBW, Wi-Fi, auto-trans control
- Software
- NSP (free); Haltech Connect app
- Logging
- 128MB onboard
- Links
- Product page ↗
- Fits
- Audi A3 / S3 · Audi A4 / S4 / RS4 · Audi TT / TTS / TT RS · Honda Accord · Honda Civic · Honda Integra / RSX · Honda Prelude · Honda S2000 · Mazda MX-5 Miata · Mazda RX-7 · Mitsubishi Eclipse · Mitsubishi Lancer Evolution · Nissan 300ZX (Z32) · Nissan Micra · Nissan Patrol / Safari · Nissan Pulsar GTI-R · Nissan Silvia / 180SX / 200SX / 240SX · Nissan Skyline (non-GT-R) · Nissan Skyline GT-R (R32–R34) · Nissan Stagea · SEAT Leon · SEAT Toledo · Skoda Octavia · Subaru Impreza WRX / STI · Toyota Chaser / Mark II / Cresta · Toyota Land Cruiser · Toyota Soarer · Toyota Supra · Volkswagen Beetle · Volkswagen Golf · Volkswagen Jetta / Bora · Volkswagen Polo
- Tuning
- Find a Haltech tuner with a dyno
- Maker
- Haltech: history, software and every model
Where to buy the Nexus S3
24 sellers found
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Prices as shown on each seller's site on , in their own currency, converted at 14 Oct 2026 rates. Shipping, import duty and tax vary. Check with the seller before you buy.
