PM5 Brushless Fuel Pump Controller

Torqbyte PM5 is an advanced microprocessor-controlled brushless low-pressure fuel pump (LPFP) controller. It was designed to be used as either a standalone controller or a complete Plug-n-Play drop-in replacement for the OEM fuel pump PWM control module. PM5 is used to overcome the challenge of increased fueling in returnless direct injection fuel systems where the ECU and the OEM fuel pump control module work together to achieve closed loop control of the fuel system line pressure.

Unlike brushed fuel pump controllers, brushless pump controllers are uniquely tuned for the specific pump they are supplied with. It is generally impossible to attach a mismatched brushless fuel pump to a particular brushless controller and expect the combination of two to provide long-term, trouble-free and reliable operation. Generally, a mismatch between the pump controller and the attached pump will result in reduction of usable pump duty range (limiting the pump's performance and requiring tuning "bandaids" to compensate) as well as overheating and eventual failure of either the controller or the pump. For this reason, an upgraded controller is strongly recommended when running brushless upgrades such as an E5LM or E4LM.

PM5 installs between the ECU and the upgraded fuel sender. PM5 is capable of continuously supplying the aftermarket fuel pump with up to 40A of current.

While the PM5 does all the heavy lifting in terms of supplying the required current to the aftermarket LPFP, its electronics interface directly with the ECU ensuring no diagnostics trouble codes are generated. Torqbyte's innovative technical solution implemented in the PM5 allows the ECU to maintain full control of the aftermarket LPFP operation and maintain the closed-loop fuel pressure control mechanism that the vehicle was originally designed with. This crucial feature is something that none of the other LPFP "upgrades" currently on the market are able to offer.

Since the ECU, in a vehicle equipped with a Torqbyte PM5, maintains complete control of the vehicle's fuel system operation, all the familiar pump operating characteristics are retained, such as system priming when a door is opened. As long as the selected aftermarket LPFP is able to meet the flow and pressure requirements of the user's desired fueling set-up, any fuel line pressure target requested by the ECU tune will be easily achieved.

Because it interfaces directly with the ECU, PM5 is able to live-stream the ECU command duty as well as pump actual duty, over USB, to a laptop running the free Torqbyte TorqBLPM Windows software. These logs can be invaluable in identifying tuning issues or diagnosing mechanical fuel system faults.

Power, Ground and Pump Connections

All Plug-n-Play kits are supplied pre-configured in terms of PM5 to fuel-sender top hat connections. All PM5 kits (both Plug-n-Play or generic) require custom Power and Ground wiring connections.

The standard PM5 requires a single fused 40A connection to the battery +ve terminal and a solid connection to the nearest vehicle chassis ground.

Pump wires should be kept as short as possible keeping in mind that the PM5 is not sealed and MUST be mounted inside the vehicle.

PM5 housings, wiring adapters and electronic boards are 100% manufactured in Canada and the United States. We use authentic components sourced from manufacturer-authorized distributors and our only offshore import are wire adapters and connectors from OEM suppliers in Germany. We assemble everything using only manufacturer-recommended tooling, procedures and automotive-grade materials. 

PM5 is housed in a rugged, thermally-conductive, CNC machined aluminum enclosure that is hard anodized for maximum durability.

 Features:

• High-Power Brushless Fuel Pump Controller for Automotive Racing Applications
• Available with optional Integrated Voltage Boosting up to 24Vdc
• Unlike inferior "repurposed brushless OEM" or "repackaged hobby RC" controller solutions where a controller originally intended for Pump X is used with Pump Y, which limits the pump's usable duty range and eventually causes premature failure of the controller or the incompatible pump, the PM5 is specifically configured to drive the Ti Automotive (ex Walbro) E5LM / E4LM pump
• PM5 interfaces directly with the factory and aftermarket Engine Management systems and eliminates diagnostic trouble codes (DTCs)
• Fully programmable/configurable pump duty input/output control with our easy to use TorqBLPM PC software
• TorqBLPM software provides live-viewing, data-logging and playback of ECU-commanded vs. Pump-actual duty helping to diagnose ECU tuning or fuel system mechanical issues
• PM5 is the first and only LPFP driver solution on the market that allows the ECU perform complete closed-loop control of the requested fuel system pressure regardless of what aftermarket LPFP is used. 
• Supports big turbo setups by removing the traditional LPFP fueling bottleneck and permitting the fuel system to hold any ECU-requested pressure
• The PM5 is available in either standard battery voltage or optional voltage boosted variants.
• A secondary PM5 used to control a second brushless LPFP can be slaved to the primary PM5 controller and configured completely independently of the primary pump/controller.
• Works with any LPFP set-up that draws less than 38A at peak load and peak duty. With the PM5 you are not sacrificing future flexibility and limiting your options by using a fueling solution that only lets you use one particular LPFP make/model
• Works with any ECU tuning package, or even without any ECU tuning at all. With the PM5 you are not limiting your options by using a fueling solution that forces you to use only one vendor's ECU tuning suite.
• Integrates seamlessly with the vehicle's factory electrical systems
• Available with universal unterminated wiring or with vehicle-specific Plug-n-Play Harness Adapters that transfer maximum power to the LPFP sender through thicker 12AWG (4.0mm^2) or 10AWG (5.0mm^2) wires - a feature not available with inferior solutions that reuse the factory PWM control module with its thin factory LPFP wiring
• Reliable, easy to install and operate.
• Overdesigned using the highest-quality automotive and industrial grade electronic components that far exceed the operating ratings and life cycle of the vehicle's OEM electronic modules
• Built and tested in Canada