Haltech Nexus R3 VCU 

Advanced Vehicle Control Unit with Integrated PDM, ECU, Data Logger & Wideband

The Haltech Nexus R3 is a next-generation Vehicle Control Unit (VCU) that redefines what's possible in engine management and motorsport electronics. Combining a standalone ECU, power distribution module (PDM), professional data logger, and wideband controller into a single, compact unit, the Nexus R3 offers unmatched performance and integration for serious tuners and racers.

Designed for high-powered performance vehicles, the Nexus R3 simplifies wiring and expands functionality—delivering robust control over power delivery, fuel systems, ignition, throttle, sensors, and data acquisition.

Key Features of the Haltech Nexus R3 VCU:

• Integrated Power Distribution Module (PDM)

  • 4 x 25A continuous push-pull PWM outputs @ 5 kHz (ideal for injectors, coils, thermofans, transbrake, fuel pumps)

• Flexible Fuel & Ignition Control

  • 8 x Peak & Hold Injector Drivers (also usable as low-side outputs)

  • 8 x Low Current Ignition Outputs (low-side drive compatible)

  • 6 x PWM-capable Low Side Outputs (DPOs)

• Advanced Throttle Control & Output Handling

  • 6 x Push-Pull H-Bridge Outputs (8A, PWM capable) – perfect for drive-by-wire throttle control and solenoids

• Sensor & Input Support

  • 11 x 0–5V Analog Inputs with switchable 5V pullups and redundancy for DBW throttle

  • 6 x Synchronous Pulsed Inputs with zero crossing or adjustable threshold – supports cam sensors, frequency inputs, or analog data

  • Differential trigger and home inputs with glitch filtering and adjustable thresholds

• Built-in Wideband & MAP Sensors

  • Integrated wideband oxygen sensor controller (compatible with NTK and Bosch LSU 4.9 sensors)

  • Built-in 4 Bar MAP Sensor for up to 45 PSI boost monitoring

• Dual CAN Bus Communication

  • 2 x High-Speed CAN Ports with configurable termination for seamless communication with dashes, PDMs, and third-party accessories

Why Choose Nexus R3?

The Nexus R3 VCU is ideal for high-performance builds requiring precise engine management, simplified wiring, and advanced logging and diagnostics. Perfect for drag racing, circuit, time attack, and off-road performance vehicles.

VCU FUNCTIONS

• Controlled via NSP (Nexus Software Programmer)
• Long Term Learning
• Stepper Motor Control
• 4D Closed Loop Boost Control
• Closed Loop CO2 Control
• Rotational Idle
• Launch Control
• Traction Control
• Anti-Lag
• Dual Knock Control
• Trans Brake Control
• Race Timer
• Multi Stage Fuel Injection
• Multi-level Engine Protection
• 6 Stage Nitrous Control
• 4-sensor variable cam control
• Intake Air Bleed Control
• Flat Shift Control
• Shock Travel & Ride Height Control
• Advanced Torque Management
• On-board Wi-Fi
• On-board datalogging (128MB)

AUTOMATIC TRANSMISSION CONTROL

• Ford AODE/4R70W
• GM 4L60E
• GM 4L80E
• Toyota A340E
• Lenco
• Liberty

What's Included: 

• Nexus R3 VCU
• SurLok Connectors
• Wi-Fi Antenna
• Mounting Bolts
• USB-C Programming Cable
• USB-C Dust Cap

Info: 

Brand: Haltech 
Model: Nexus R3
Suitable for: Universal 1-8 cylinder or 2-4 rotor applications 
Warranty: 12 Months 

Note:

Ideal for racing applications where advanced race features, data logging and power management control is required.

Resources:

• Quickstart Guide
• Wiring Diagram