Take full control of your Mazda RX-8’s 13B-MSP with the Haltech NEXUS Plug-in ECU — a direct plug-in replacement for the factory ECU that brings the full power of the Haltech NEXUS platform to your RX-8 without cutting a single wire. Whether you’re building a naturally aspirated high-revving street car or a turbocharged track weapon, the NEXUS plug-in gives you the tuning capability to extract every last revolution from the rotary.

• Direct plug-in fitment — replaces the factory ECU using the OEM connector, no wiring modifications required
• Haltech NEXUS platform — full-featured standalone ECU with advanced fuel, ignition, boost, traction control, and launch control capabilities
• Rotary-specific tuning — supports the unique fuelling and ignition requirements of the 13B-MSP twin-rotor engine, including leading and trailing ignition control
• Wideband O2 input — built-in wideband lambda input for accurate closed-loop fuelling and tuning
• CAN bus connectivity — expandable via CAN for additional sensors, displays, and Haltech accessories including the WB1/WB2 wideband controllers
• Haltech ESP software — configured and tuned using Haltech’s powerful and intuitive Elite Software Platform (ESP)
• Plug-in simplicity, standalone capability — all the power of a full standalone ECU with the installation simplicity of a plug-in unit

The RX-8 is one of the most rewarding platforms to tune — and the NEXUS plug-in is the ECU that does it justice. Pair with a Haltech wideband kit and IO expansion harness for a complete, professional engine management solution.

Fitment: Mazda RX-8 (SE3P) — 13B-MSP engine

Part Number: HT-231401