HALTECH NEXUS Plug-in ECU Mazda RX-8 Series 1 2003-2008 All + LSU4.9 Wideband Hardware Pack

HALTECH NEXUS Plug-in ECU Mazda RX-8 Series 1 2003-2008 All
 

Suits: Plug 'n' Play replacement of the factory ECU for Mazda RX-8

Includes: Nexus Plug-in ECU, Air temperature + Wideband expansion harness 2.5m (8'), Air temperature sensor (1/8 NPT), Mounting hardware, vacuum hose, T-piece, USB cable, LSU 4.9 Sensor, harness and bung, Quick Start Guide.

Notes: Supports Manual Transmissions Only - Factory manual - 5 speed on 4-port, 6 speed on 6-port.

PRE-SALE ITEM - ESTIMATED SHIPPING MID Nov 2025

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

• Includes sensor, weld in bung and 1.2M / 47" harness plug and play with Nexus Series harnesses

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
• Dual Knock Control
• Variable Cam 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.)

Product Safety Information
HALTECH
17 Durian Pl. Wetherill Park, New South Wales 2164, Australia
www.haltech.com/contact-us/

Responsible Person in the EU
Wankelshop
Ayinger Str. 1
85653 Aying, Germany
ask@wankelshop.com