Haltech Nexus S2 Plug-and-Play ECU OBD1 Honda Civic

The Haltech Nexus S2 Plug-and-Play ECU for your 1992–1995 Honda Civic, 1994–1995 Acura Integra, or any vehicle using an OBD1 Honda engine harness.

This isn’t just a replacement—it’s a massive upgrade.

🔥 Why Choose the Haltech Nexus S2?

The Nexus S2 offers full standalone ECU functionality, plus power distribution, wideband control, CAN integration, and advanced datalogging—all in one clean, plug-and-play package.

It’s the perfect solution for B-series, D-series, or even H/K-swap builds that need more control, more safety, and more tuning power than what the old P28 could offer.

 

✅ Key Features:

• Plug-and-play for 1992–1995 Civic and 1994–1995 Integra (OBD1 harness required)

• Integrated PDM (Power Distribution Module) – No more relays or fuse boxes

• Built-in wideband O2 control and CAN connectivity

• Full support for boost control, flex fuel, DBW, VTEC, launch control, and more

• Compatible with Haltech IC-7 dash, CAN keypads, and Haltech accessories

• USB tuning via NSP software – Real-time tuning, datalogging, and diagnostics

• Expandable I/O for fuel pressure, oil pressure, nitrous control, boost by gear, etc.

 

🔧 Ideal For:

• Serious street builds

• All-motor or boosted B/D-series engines

• Racers looking for full standalone tuning

• Anyone wanting a modern alternative to the P28/S300 combo

• Tuners upgrading from outdated chipped ECUs or piggybacks

 

💡 Why Upgrade from S300?

 

While the Hondata S300 was legendary, the Haltech Nexus S2 delivers modern reliability and features:

• No need for socketing/chipping

• Built-in PDM = less wiring, fewer failure points

• Integrated CAN = clean expansion and future-proofing

• Full standalone with OEM-style plug-and-play simplicity

🚀 Summary:

Step into the future of Honda engine management with the Haltech Nexus S2 Plug-and-Play ECU—a modern, modular, and powerful solution designed to push your build further, safer, and faster.