• Haltech Nexus Plug-In ECU packaging and included components
  • Haltech Nexus ECU kit with accessories – Racing Solutions Australia
  • Haltech Nexus Plug-In ECU – RX-8 wiring harness connection
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Haltech Nexus Plug-in ECU - Mazda RX-8

Haltech Nexus Plug-in ECU - Mazda RX-8

HT-231401

$2,355.00 AUD
$2,355.00 AUD
Sale Sold out
Tax included. Shipping calculated at checkout.
  • Authorised Haltech dealer
  • Fast Shipping Australia Wide
  • Real fitment advice

Haltech Nexus Plug-in ECU - Mazda RX-8

The Haltech Nexus Mazda RX-8 Plug-in, as the name suggests, plugs directly into the Mazda harness, and nestles neatly into factory location.
It seamlessly supports vital OEM functions.
Unlock enhanced capabilities with "OEM Plus" functionality via the auxiliary connector, enabling features such as O2 Control, Flex Fuel, Oil Pressure monitoring, Fuel Pressure sensing.
And for serious drivers, the Nexus ECU unleashes potent Race Functionality, including CO2 Boost Control, Race Timer, Advanced Torque Management, Launch Control, Nitrous Control, and 128MB of onboard data logging.
Setting up your Mazda has never been easier, thanks to the intuitive setup wizard in NSP software or the Haltech Connect App on your smartphone. Plus, Wi-Fi capability ensures effortless diagnostics and tuning on the go.
Nexus Plug-in ECU includes
  • Nexus Plug-in Mazda RX-8 ECU
  • Air temperature + Wideband expansion harness 2.5m (8')
  • Air temperature sensor (1/8' NPT)
  • Aluminium bung for air temperature sensor
  • Mounting brackets and hardware to suit
  • 3mm Vacuum hose 2.5m (8')
  • 3mm Aluminium Vacuum T piece
  • Haltech USB-C cable
  • Quick start guide
NEXUS PLUG-IN ECU FEATURES
  • Drive By Wire Throttle Support
  • Single Channel Onboard Wideband Control - Supports LSU4.9/NTK
  • Wi-Fi
  • 4 channel onboard oscilloscope
  • Data logging 128MB
  • Flex Fuel
  • Closed Loop O2 Control
  • Knock Control
  • Long term learning
AUXILIARY CONNECTOR
  • 4 X Digital Pulsed Outputs
  • 4 X Synchronised Pulsed Inputs
  • 1 X Onboard Wideband
  • 2 X Sensor Ground
  • 2 x 12V Output
  • 2 x 5V Output
SUPPORTED OEM FUNCTIONALITY:
  • Drive-By-Wire / Electronic throttle
  • Alternator control
  • Cruise control switch
  • Oil Metering Pump (OMP)
  • Secondary Shutter Valve (SSV) solenoid
  • Variable Dynamic Intake (VDI) solenoid
  • Variable Fresh Air Duct (VFAD) solenoid
  • Auxiliary Port Valves (APV) motor
  • Electronic Power Steering
  • DSC / Traction control
  • Instrument cluster
  • Rear O2 sensor (used as narrowband)
  • ABS module (Note: Limited support. Currently we support the AUDM, JDM, USDM, and two different European versions of the ABS module. Other modules will have different CAN addressing.) ABS modules using K-line (instead of CAN) is not supported.
  • Immobiliser light on dash (Note: We don't support the immobiliser, but the Haltech Plug-in ECU will still function and run the car regardless of the factory immobiliser and can prevent the immobiliser warning light from turning ON when the factory ECU is replaced.)
View full details
  • Haltech Nexus Plug-In ECU packaging and included components
  • Haltech Nexus ECU kit with accessories – Racing Solutions Australia
  • Haltech Nexus Plug-In ECU – RX-8 wiring harness connection

Haltech buying information

Warranty & authorised dealer

Racing Solutions is an authorised Australian Haltech dealer. Everything we supply is genuine, current-revision Haltech stock — never grey or parallel import.

Haltech products come with a limited 12-month warranty covering defects in materials and workmanship from the date of purchase.

Warranty claims are handled directly by Haltech. You'll need valid proof of purchase — your original invoice or receipt. If you're not sure where to start, get in touch and we'll point you in the right direction.

Price match

If you find this exact item advertised for less by another authorised Australian Haltech dealer, contact us before you order and we'll match the price.

To qualify:

  • The competitor must be an authorised Australian Haltech dealer
  • Same part number, brand new, and currently in stock with them
  • The price must be publicly advertised and GST-inclusive
  • We compare the total delivered price, including shipping
  • Excludes clearance, run-out, sale events, member-only pricing, and auction or marketplace listings

Call 0458 998 395 or use the contact form below and we'll confirm within one business day.

Dispatch & delivery

If the item is in stock at our Perth warehouse or at Haltech, it ships same or next business day.

Not every product is held in stock, including at Haltech. Items that need to be built or restocked can take up to 4 weeks.

If you want a firm lead time before you order, get in touch and we'll confirm it for you.

Tuning & fitment support

Buying the ECU is the start, not the end. We can talk you through which harness, sensors and accessories your combination actually needs, and point you toward tuners who know the platform.

Over 20 years of hands-on trade experience sits behind that advice — we build and run these cars ourselves.

Not sure which ECU or harness you need?

Haltech's range spans wire-in ECUs, plug-in ECUs, terminated harnesses and plug-and-play kits. The right choice depends on your engine, throttle type (cable or drive-by-wire) and injector connectors.

Send us your engine, model year and current setup and we'll confirm the correct part number before you buy.

Questions about this Haltech product?