Haltech Nexus Rebel K Plug and Play ECU

The Haltech Nexus Rebel K Plug and Play ECU (HT-220206) is a complete engine management and wiring solution for Honda K-series swaps, covering all factory port-injected engines including K20A, K24A and K24Z. Designed specifically for K-swap conversions, it combines a dedicated Nexus Rebel K ECU with a purpose-built terminated harness and a full sensor package, so you can spend less time on wiring and more time on tuning.

This kit uses factory-style connectors for the key Honda engine interfaces, allowing you to run OEM crank and cam sensors, K-series ignition coils, Keihin injectors, alternator, coolant temperature sensor, vehicle speed sensor, idle air control valve, reverse lockout solenoid and Honda drive-by-wire throttle control (when using the supplied DBW sub-harness). Cable throttle support is also included.

Inside Haltech NSP, the Rebel K Setup Wizard helps you select your engine code and automatically builds a solid base map to get the car up and running quickly. From there you retain full K-series functionality, including variable inlet cam timing and lift, while gaining the flexibility of additional user-definable I/O for extras like flex fuel, boost control or auxiliary sensors.

The Nexus Rebel K Plug and Play ECU is ideal for engine-swapped street cars, track builds, time attack and club racing applications where you want OEM-style integration with the advantages of modern motorsport-grade engine management.

• Complete K-swap management package
  Supplied as a matched ECU, harness and sensor kit for port-injected Honda K20A/K24A/K24Z and variants.
• Plug and play style installation
  Harness terminated with factory-style connectors for key engine sensors and actuators, reducing custom wiring work.
• Rebel K Setup Wizard in NSP
  Guided configuration with a pre-configured base map so you can select your engine code and get running sooner.
• Retains factory K-series functionality
  Controls OEM crank and cam sensors, K coils, Keihin injectors, variable inlet cam timing and lift, alternator, VSS, idle air and reverse lockout.
• Supports both DBW and cable throttles
  Includes dedicated Honda DBW throttle sub-harness and separate cable throttle sub-harness for flexible setup options.
• Integrated sensor pack
  Bosch LSU 4.9 wideband O2 sensor, Bosch knock sensor and an air temperature sensor are included to support accurate tuning.
• Onboard MAP sensor option
  Use the factory Honda MAP sensor or the ECU’s onboard MAP sensor for higher-boost or custom applications.
• User-definable inputs and outputs
  Extra AVIs, SPIs and DPOs allow integration of flex fuel, boost control, additional sensors and custom outputs.
• High-speed logging and wireless connectivity
  Onboard 32MB logging plus Wi-Fi access for log extraction, with hardware Wi-Fi lockout for security.
• Expandable via Haltech CAN
  Dual CAN ports support Haltech IO16/PD16 expansion modules and vehicle CAN integration.
• No ignition sub-harness required
  Factory K-series ignition coil connectors are built directly into the main harness.
• Injector harness flexibility
  Includes Keihin injector harness, with optional EV6 (USCAR), EV1 and Sumitomo (Denso) harnesses available separately.

Original Engine Functions and Extra Functions (Fixed)

• Injector outputs: Sequential injection, high impedance injectors only
• Ignition outputs: Direct fire, OEM K-series coil support
• Coolant temperature: Uses factory Honda sensor
• Throttle control: Idle air control solenoid, TPS or DBW via Nexus Honda DBW Throttle Subharness (HT-186168)
• Alternator: Factory alternator supported
• MAP sensor: Factory MAP via harness, or ECU’s onboard MAP sensor
• Cam control: Variable inlet cam timing and lift control
• Crank and cam sensors: Factory Honda sensors supported
• Vehicle speed: Factory vehicle speed sensor supported
• Reverse lockout solenoid: Factory reverse lockout supported
• Air temperature: External air temp sensor supplied in sensor pack
• Fuel pump: Direct ECU fuel pump control
• Thermofan: Direct ECU thermofan control
• Knock sensor: Bosch sensor supplied in sensor pack
• Wideband lambda: Bosch LSU 4.9 sensor supplied in sensor pack
• Tacho output: Dedicated tacho output provided
• Brake pedal input: Included
• Accelerator pedal input (APP): Included

User-Definable Inputs/Outputs

• High Current Output (HCO): 1 x 25A (configured as starter control by default)
• Analog Voltage Inputs (AVI): 2 x 0–5V (e.g. oil temperature, fuel pressure)
• Synchronised Pulsed Inputs (SPI): 4 x 0–5V or frequency inputs (e.g. flex fuel, wheel speed)
• Digital Pulsed Outputs (DPO): 4 x low-side outputs (e.g. boost control, secondary fans, auxiliary devices)

Communications and Logging

• CAN ports: 2 (Haltech CAN and vehicle CAN)
• I/O expansion: Supported over CAN using Haltech IO16 and PD16 expansion modules
• Wireless connectivity: Wi-Fi connection, approx. 900 kB/s data log extraction
• Onboard logging: 32MB internal memory
• Wi-Fi security: Hardware lockout with physical interlock to disable wireless chip

Supported Engines and OEM Integration

• Supported engines: All factory port-injected Honda K-series engines, including K20A, K24A, K24Z and variants
• Factory inputs supported: Crank, cam, coolant temperature, vehicle speed, throttle position, Honda APP sensor, brake pedal
• Factory outputs supported: K-series ignition coils, Keihin injectors, variable inlet cam timing and lift, starter solenoid, idle air control valve, alternator, reverse lockout solenoid, Honda DBW motor (via HT-186168), tacho output

Not Supported

• Automatic transmissions
• Low impedance injectors
• Factory Honda air temperature, knock and O2 sensors
• VTEC pressure switch and thermofan switch
• Transmission reverse switch
• Factory Honda ETC (electronic throttle control) module (must be bypassed or removed)
• Serial communication with factory Honda DBW, BCM or ICC modules (no OEM A/C request, coolant gauge, etc. once fitted)

Fitment Notes

• No ignition sub-harness required – factory K-series ignition plugs are built into the main harness.
• Kit supplied with both cable throttle and DBW throttle sub-harnesses.
• Kit supplied with Keihin injector harness; optional EV6 (USCAR), EV1 and Sumitomo (Denso) injector harnesses sold separately.

• HT-220003 – Nexus Rebel K ECU
• HT-186402 – Nexus Rebel K main terminated harness, including:
  • Cabin adaptor harness with universal DTM6 APP connection
  • Alternator adaptor harness
  • Honda APP adaptor harness
  • K20 and K24 crank sensor connectors
  • Spare I/O connector and pin pack
  • Main harness quick start guide
• HT-186016 – i4 Keihin primary injector harness
• HT-186168 – Nexus Honda DBW Throttle Subharness (for factory DBW motor and APP)
• HT-186169 – Honda cable throttle sub-harness
• HT-187011 – Nexus 02–04 Honda transmission sub-harness
• HT-187012 – Nexus 05+ Honda transmission sub-harness
• Nexus Rebel K sensor pack containing:
  • Bosch LSU 4.9 wideband O2 sensor and weld-on fitting
  • Air temperature sensor (1/8" NPT, DTM2 plug and pins) and weld-on fitting
  • Bosch knock sensor
  • Knock sensor stud adaptor
  • Flanged M8 nut

Optional Accessories (Sold Separately)

• HT-186013 – i4 GT150 (USCAR EV6) primary injector harness
• HT-186014 – i4 Timer (EV1) primary injector harness
• HT-186015 – i4 Sumitomo (Denso) primary injector harness