CM5-MiniOEM - Single-Pump WMI Controller Board
Torqbyte Inc.
- Designed for WMI kit manufacturers and custom builders seeking to integrate competitively priced, market-proven 3D-mapped pump control into their own kits
- Controls 1 Water Methanol Injection (WMI) pump in forced induction gasoline or diesel setups
- Industry’s first 3D mapped PWM duty control based on Engine RPM and Boost - not available with typical "progressive" controllers
- 4 General Purpose Outputs (GPOs) can be used for controlling boost control solenoids, anti-siphon solenoids, Fast Acting Valves (FAVs), auxiliary high-impedance injectors, staged injection solenoids, lamps, relays, indicator LEDs, or 3rd party Electronic Boost Controllers (EBCs)
- Each of the CM5-MiniOEM's five outputs can be independently configured through a dedicated 16x16 duty table
- CANBus integration allows injection control based on parameters obtained from the vehicle's internal CAN network
- Controller can also transmit its internal data via CANBus to aftermarket ECUs or CAN Gauge Displays
- Ideally suited for Direct Injection or Staged water methanol setups
- Advanced built-in safety features based on optional flow sensors or pump current not available on rudimentary "knobs and switches" WMI controllers
- Fully-customizable operation with easy-to-use TorqTune2 PC software
- TorqTune2 software also provides real-time data viewing, data logging and data playback of all system parameters for unprecedented ease of system tuning
- Designed, tested and manufactured in Canada
The Torqbyte CM5-MiniOEM lets Water Methanol Kit Integrators leverage Torqbyte’s sophisticated 3D-mapped PWM control and industry-leading TorqTune2 software—the result of extensive development—seamlessly into their own water methanol injection kits and product lines.
It drives one individually-controllable water methanol injection (WMI) pump and up to four individually controllable anti-siphon solenoids, Fast Acting Valves (FAVs), auxiliary high impedance injectors, relays, light indicators, or any combination thereof. The CM5-MiniOEM pump output supplies up to 18A to the connected WMI pump.
CM5-MiniOEM Board
Supplied as an electronic circuit board only. Smaller dimensions and lower cost compared to CM5-LTS. No housing or wiring provided. Minimum order quantity: 12 boards.
CM5-MiniOEM maintains the same Input/Output pinout as the CM5-LTS ensuring full compatibility with the CM5-LTS wiring.

Recommended Hardware
The following additional hardware is recommended to be used in the final WMI Kit assembly:
| Qty. | Manufacturer | Mfg. Part No. | Description | Link |
| 1 | Littelfuse | FHAC0003ZXJB | In-Line Fuse Holder | Link |
| 1 | Littelfuse | 0287025.PXS | 25A Fuse | Link |
| 3 | Molex | 19164-0044 | Splice, Sealed, Blue, 14AWG | Link |
| 1 | Molex | 64016-0041 | Manual Crimper for Sealed Splices | Link |
| 1 | TE | 130090 | Ring Terminal, M5, 14AWG | Link |
| 1 | TE | 320563 | Ring Terminal, M6, 14AWG | Link |
| 1 | TE | 320575 | Ring Terminal, M8, 14AWG | Link |
| 1 | TE | 58433-3 | Manual Crimper for Ring Terminals | Link |
| 1 | Cvilux USA | DH-20M50052 | USB-C/A Cable, 1m (3ft) Long | Link |
The following drawing shows an example of an Input/Output Wiring Harness that could be used in the final WMI Kit assembly. This wire harness design can be used as-is or be modified to suit.
| Connector Reference |
INPUT/OUTPUT |
| Mating Connector Housing (Molex) | 1729522001 |
| Contact Retainers (Molex) | 1729532001 (Need Qty. 2) |
| Crimp Contact (Molex) | 430300008 |
| Contact Durability | 30 Mate/Unmate Cycles |
| Manual Crimper (Molex) | 638190000 |
| Wire Gauge | 20AWG |
| Wire Type |
TXL-20 |
| Wire Strip Length | 2.73mm 0.107" |
The following drawing shows an example of an Input/Output Wiring Harness that could be used in the final WMI Kit assembly. This wire harness design can be used as-is or be modified to suit.
| Connector Reference |
POWER IN PUMP OUT |
| Mating Connector Housing (Molex) |
444412004 |
| Contact Retainers (Molex) | None |
| Crimp Contact (Molex) |
433751001 |
| Contact Durability | 25 Mate/Unmate Cycles |
| Manual Crimper (Molex) |
638117300 |
| Wire Gauge | 14AWG |
| Wire Type |
SXL-14 |
| Wire Strip Length | 4.75mm 0.187" |
3D STEP file of the CM5-MiniOEM Circuit Board is provided below for customers wishing to design their own controller enclosure from scratch. Please note that the enclosure must be made from a non-conductive material.
3D STEP file of the CM5-MiniOEM Simple 2-Piece Enclosure is provided below for customers wishing to 3D print or machine their own plastic enclosure. Table below shows some additional hardware that is required for final mechanical assembly if the provided enclosure design is used.
| Qty. | Manufacturer | Mfg. Part No. | Description | Link |
| 4 | Bivar | LFB075CTP | Light Pipe | Link |
| 4 | Bivar | RTN112 | Light Pipe Retainer | Link |
| 4 | McMaster | 90380A115 | Plastite Self-Threading Screw | Link |
Optional Input / Output Expansion Module
CM5-MiniOEM can interface with up to 2 flow sensors, an optional dash-mounted LCD display (or gauge), 0-5V analog inputs or the vehicle's CANBus network.
This additional functionality can be accessed via the optional I/O Expansion Module.
CM5-MiniOEM Technical Info
| Operating Temperature | -40°C to +60°C -40°F to +140°F |
| Overall Dimensions | 120mm x 60mm x 20mm 4.75" x 2.4" x 0.8" |
| Mounting Hole Pattern | 114mm x 54mm |
| Weight | 55g |
| Current Rating (MAIN) | 18.0 A |
| Current Rating (GPO1,2,3,4) | 1.25 A |
| PWM Frequency (MAIN) | 10kHz or 20kHz (Software Selectable) |
| PWM Frequency (GPO1,2,3,4) | 20Hz-30Hz (Selectable in 1 Hz Increments) |




