Precision Raceworks MOTIV Re|Flex+ Port Injection Controller - BMW 4-8 Cyl | Flex Fuel Ethanol | CANbus | Sequential PI | Boost/Meth/Nitrous PWM | TunerPro Compatible

Precision Raceworks MOTIV Re|Flex+ Auxiliary Fuel and I/O Controller

Take control of your fuelling, safety strategies and add-on hardware with the MOTIV Re|Flex+ from Precision Raceworks. This compact piggyback ECU drives true sequential port fuel injection while managing extra hardware such as boost solenoids, water meth valves and nitrous oxide kits. It is the cleanest way to add dependable supplementary fuelling, real flex-fuel mapping and smart CAN integration to modern BMW builds and other 4, 5, 6 and 8 cylinder engines.

We run Re|Flex+ on our own cars and our customers rave about the smooth idle quality, factory-like drivability and consistent power delivery. If you want a rock-solid additional injector driver with ethanol blend capability and room to expand, this is the module that keeps pace with serious performance goals.

Key advantages

• True sequential auxiliary injection with per-injector fault detection for 4 to 8 cylinders
• Integrated ethanol content input and compensation tables for proper flex-fuel calibration using live sensor data
• CAN integration available for data sharing with the factory ECU, improved safety logic and enhanced logging
• Two fully configurable outputs with 12x12 tables in TunerPro R/T including on off, frequency 25 Hz and PID control modes
• Two analogue sensor inputs for data such as fuel pressure 0 to 10 bar, oil pressure 0 to 10 bar, manifold pressure, coolant pressure, EMAP or EGBP 0 to 10 bar
• Preset cam and crank patterns for many late-model BMW engines plus fully configurable trigger support
• 3 point MAP or TMAP calibration for easy sensor scaling
• Operate as a standalone fuelling computer or in parallel with the OE DME for a seamless integration

What it can control

• External wastegate duty via 3-port or 4-port boost control solenoids
• Water methanol valves using PWM control, including Aquamist FAV and ProMeth Pulse Valve
• Nitrous oxide solenoids using PWM strategies
• Auxiliary fuel pump relay trigger

Re|Flex+ is one of the most capable auxiliary controllers available, combining accurate supplementary fuel delivery with versatile I O control and robust safety features. As flash platforms evolve, end users can update firmware, protecting your investment as your setup grows.

Ethanol sensor and flex-fuel notes

Already using a Bluetooth ethanol content reader. Add the Re|Flex Plug-n-Play Ethanol Sensor Breakout Harness to run your current analyser in parallel with Re|Flex+ for live E content to both devices.

CAN integration

Re|Flex+ can send and receive CAN messages for deeper integration with factory systems. Share data and fault status with the OE ECU, keep OBDII logging functional, convert electronic wastegate commands to a conventional DC output for 3-port and 4-port boost solenoids, and log non-factory parameters such as ethanol percentage, extra pressures and PI duty cycle.

CANbus integration is not available on N54 platforms.

Specifications

• Part number: 101-0211
• Weight: 2.0 lbs
• Dimensions: 4.5 in x 3 in x 1.5 in
• Enclosure: Injection moulded plastic
• Tuning software: TunerPro
• Programming: Micro USB connection, cable not included available here
• Works standalone or alongside the factory DME ECU

Installation, fitting and mapping support

For professional installation and calibration, book MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote or to discuss your build.

Wiring, installation and instructions are available here: installation and downloads.

Warranty and registration

Register your unit to activate warranty coverage here: product registration and warranty.

Compatibility

• Configurable for 4, 5, 6 and 8 cylinder engines
• Preset cam and crank triggers for many modern BMW engines
• CANbus integration not available on N54 platforms

Pre-dispatch compatibility check

We verify compatibility before shipping. Add your UK registration or the last 7 of your VIN at checkout to ensure correct fitment.

Manufactured by

Precision Raceworks

Search-ready phrases customers use

BMW auxiliary fuelling controller, port fuel injection driver, piggyback fuel computer, flex-fuel tuning kit, E85 conversion module, ethanol sensor input controller, sequential PI driver, injector controller for turbo builds, boost solenoid controller, PWM meth injection control, nitrous solenoid PWM controller, wastegate duty controller, tuner friendly ECU add-on, TunerPro mapping tables, 12x12 fuel tables, PID boost control, BMW CAN integration, OBD logging with PI, additional fuel pump trigger, 0 to 10 bar sensor input, EMAP logging, EGBP logging, supplementary fuelling for big turbo, ethanol blend compensation, MAP TMAP scaling, BMW performance electronics.

Photos and video