Fueling Upgrades

Autotech is the premier manufacturer of fuel pump upgrades for the FSI engine because our kit offers the highest quality, solid engineering, and great value.

Our HPFP Kit can achieve flow rates 50% higher than the original pump, essentially removing pump limitations from the equation, even on high-end turbo upgrades.

Our HPFP kit continues to be the benchmark that imitators strive to reach. However, Autotech’s HPFP Kit is not easily duplicated.

There are many reasons why Autotech’s Kit is superior. Here are a few:

~Each piston (9.8mm) and cylinder in Autotech HPFP kit undergo high-precision grinding processes many times during their manufacture, ensuring that the most precise tolerances are maintained through the final step. Not the cheapest way to make them, but the best way.

~Each piston and cylinder are match-ground and serialized to ensure absolute precision and the utmost longevity.

~Autotech was the first to incorporate plasma DLC coating on HPFP components to reduce friction losses and increase performance. Others have tried to follow by adding a coating to their parts. However, the DLC process alone is not enough – it is not a cure for substandard precision – the parts must be engineered specifically for the process to take full advantage: Autotech’s are. The success we have in the field can attest to that.

~HPFP-specific mapping is now commonly available from tuners worldwide.

Tuners trust Autotech’s HPFP in their conversions and upgrades because it works, and works well.

Fits VW/Audi 2.0T FSI 2006-2008.5, MK6 Golf R, and some Mazdaspeed 3 & 6 models.

2 kits required for V8 4.2L FSI Audi B7 RS4 / R8 V8 / B8 S5 models.

Install Instructions
Additional Install Photos

****** Please note - if unit is out of stock, 1 extra day turn around for delivery!

When a specific pressure is exceeded the pressure regulating valve allows fuel to escape from the high pressure fuel rail. If the pressure release valve has gone bad, then it can cause low fuel rail pressure which results in fault codes, lose of power, and a high risk of melting a piston within the engine . This Part is a great upgrade from your stock 2.0T pressure regulator valve which has an opening pressure of 130bar. With an opening pressure of 165bar you will be able to delivery more fuel to your 2.0T FSI engine giving the ability to make more horsepower. 

This is for big turbo applications mostly!

When a specific pressure is exceeded the pressure regulating valve allows fuel to escape from the high pressure fuel rail. If the pressure release valve has gone bad, then it can cause low fuel rail pressure which results in fault codes, lose of power, and a high risk of melting a piston within the engine . This Part is a great upgrade from your stock 2.0T pressure regulator valve which has an opening pressure of 130bar. With an opening pressure of 175bar you will be able to delivery more fuel to your 2.0T FSI engine giving the ability to make more horsepower. 

This is for big turbo applications mostly!

Description: Fuel injector. Each injector comes with new seals. This injector can be used as an upgrade on the EA113 2.0T motor, if you're running BIG power! These ones don't blow black smoke like the older version of the "RS4" injector, which has the same connector as the EA113 2.0T. These injectors have a different plug/connector, so we include a new connector and a short length of wire with each one - you will need to wire these in to your existing harness if you wan to use them on your EA113 2.0T. This is a "stage 3" injector

Application(s): 4.2 FSI, 4.0TFSI, found in the RS4, RS5, RS6, RS7, S6, S8, S7, & R8.

Part Number: 079906036N

Part Number: 06F906036F

Manufacturer: OEM / Audi Original Factory Equipment

Application(s): 2.0 TFSI engines as found in the TT, TT-S and S3, and MK6 Golf R. They are an upgrade injector for the MK5 Golf GTI, 8P A3, and Octavia vRS. If you're not sure if this part will fit your vehicle, please send us a message and we can help figure it out.

Description: OEM fuel injector. New seals are included, so you don't need the seal kit.

• Outperforms all current market in-tank fuel pumps

• Designed for engines with more than 750 HP

• Award-winning OE technology

• High-pressure, high-flow performance

• OEM technology designed and developed for E85

Dual channel turbine design for maximum efficiency under high pressure and high temperature applications
Made in USA by TI Automotive (parent company of Walbro)

 All pumping components have been validated to OEM specifications for approved use in E85/flex fuel applications

100% Authentic & Genuine Walbro/ TI Automotive E85 Racing In tank 450 LPH high pressure fuel pump with installation kit

Walbro F90000267 internal E85 HP RACING fuel pump

Installation kit  ( fuel strainer, fuel hose, harness pigtail, 2 clamps, 2 wire connectors

The F90000267 requires modifications to system wiring, fuel lines and the fuel module, and should be professionally installed.

The innovative design of the DCSS 39/50 features a single impeller with two parallel rows of turbine blades.
Designed for high performance engines exceeding 500hp.
Designed for E85 or Gasoline applications.
The blades feed two high-pressure pumping channels, as opposed to a conventional single-stage pump that uses an impeller with a single row of blades at its outer edge.
This innovative design results in improved hot fuel flow, as well as minimal noise and current use, resulting in efficiency that’s 20 percent higher than conventional pumps. SPECIFICATIONS 465 lph @ 40 psi and 13.5V (14.1 amps) in gasoline Outlet diameter: 10mm (3/8") Diameter (upper body) 39mm Diameter (lower body) 50mm

Fuel injectors do exactly what their name suggests, as they deliver fuel into an engine's combustion chambers to be burned. Fuel injectors can cause a whole host of problems that can lead to major engine damage if not diagnosed and replaced or repaired as soon as possible.

A dirty fuel injector can cause fuel line problems such as misfiring, hard starting, stalling and hesitation. If you are hearing other noises, such as clanging or high idling, you might want to check other areas of your fuel system.

Each injector comes with new seals. This injector can be used as an upgrade on the EA113 2.0T motor, if you're running BIG power! These ones don't blow black smoke like the older version of the "RS4" injector, which has the same connector as the EA113 2.0T. These injectors have a different plug/connector, so we include a new connector and a short length of wire with each one - you will need to wire these in to your existing harness if you wan to use them on your EA113 2.0T. This is a "stage 3" injector

Part Number: 079906036T

Application(s): 4.2 FSI, 4.0TFSI, found in the RS4, RS5, RS6, RS7, S6, S8, S7, & R8.

• Complete Plug-n-Play replacement for the factory Fuel Pump Control Module in late-model Volkswagen Automotive Group vehicles using high-capacity, aftermarket, in-tank Low Pressure Fuel Pumps (LPFPs), such as the Audi TTRS (VAG Part No. 8J0 919 051 E), DeatschWerks DW400, or the Walbro/TIA F90000267/F90000274 (450 LPH), Walbro/TIA F90000285 (525LPH)
• Interfaces directly with the ECU and eliminates diagnostic trouble codes (DTCs)
• Fully programmable/configurable pump duty slope control with our easy to use TorqVFM PC software
• TorqVFM 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
• PM4 is the first and only LPFP driver solution on the market that lets the ECU perform complete closed-loop control of the requested fuel system pressure regardless of what aftermarket LPFP is used. Want to run a 23A, 525LPH Walbro F90000285 E85 pump under full control of the ECU? PM4 will let you do that. The ability to use any aftermarket LPFP, while keeping the ECU in complete control of its operation, is a key distinguishing feature not available with any competing LPFP solution
• Supports big turbo setups by removing the traditional LPFP fueling bottleneck and permitting the fuel system to hold any ECU-requested pressure
• A truly scalable solution. A single PM4 can drive two LPFPs in parallel Regardless of the preferred fuel system configuration, the ECU retains complete control of the low-pressure fuel system's operation
• Works with any LPFP set-up that draws less than 36A at peak load and peak duty. With the PM4 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 PM4 you are not limiting your options by using a fueling solution that forces you to use only one vendor's ECU tuning suite.
• Compatible with voltage boosting modules and new high-voltage LPFPs rated for up to 20V
• Integrates seamlessly with the vehicle's factory electrical systems
• Supplied with vehicle-specific Plug-n-Play Harness Adapters that transfer maximum power to the LPFP sender through thick 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 endurance of the vehicle's OEM electronic modules
• Built and tested in Canada

Torqbyte PM4 is an advanced low-pressure fuel pump (LPFP) driver module designed as a complete Plug-n-Play replacement for the factory VAG fuel pump PWM control module in order to overcome the challenges of increased fueling in VAG returnless direct injection fuel systems where the ECU and the factory fuel pump pulse width modulator (PWM) control module perform closed loop control of the fuel system line pressure.

In the factory configuration, factory fuel pump control module is only capable of supplying enough current to drive the factory in-tank low pressure fuel pump the vehicle was originally equipped with. High capacity aftermarket in-tank fuel pumps generally draw more current than the factory control module was designed to supply.

Using high capacity fuel pumps often overloads the factory LPFP controller and causes it to overheat or overcurrent. This overloading and overheating results in intermittent pump operation, which causes a drop in fuel flow and line pressure as well as dangerous fuel cuts.

Many ECU tuning packages attempt to work around this problem by artificially limiting the maximum pump duty in an attempt to keep the pump current just below the factory controller’s shutdown threshold. This approach leaves a significant percentage of the aftermarket pump’s capacity unused thus defeating the whole purpose behind running a high capacity aftermarket fuel pump.

Torqbyte PM4 provides the best and most effective solution to this problem.

PM4 installs between the ECU and the upgraded fuel sender. PM4 is capable of continuously supplying the aftermarket fuel pump with up to 36A of current. This allows it to drive all of the popular aftermarket pumps such as the Audi TTRS (VAG Part No. 8J0 919 051 E), DeatschWerks DW400, or the Walbro/TIA F90000267/F90000274 (450 LPH), Walbro/TIA F90000285 (520LPH).

While the PM4 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 PM4 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 PM4, 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, PM4 is able to live-stream the ECU command duty as well as pump actual duty, over USB, to a laptop running the Torqbyte TorqVFM application. These logs can be invaluable in identifying tuning issues or diagnosing mechanical fuel system faults.

OEM Brushless to Single or Dual Brushed Pump Conversion

PM4 can also be used when upgrading the fuel system in VAG vehicles that originally came with an OEM brushless pump.

In these vehicles the brushless pump can be removed and replaced with a single or twin high capacity brushed pumps.

PM4 is supplied with Plug-n-Play wiring adapters that connect directly to the vehicle’s factory wiring. PM4 is housed in a rugged extruded aluminum enclosure that makes it suitable for installation under the rear seat.

On the outside, Torqbyte PM4 is enclosed in a thermally-conductive, CNC machined aluminum enclosure that is hard anodized for maximum durability.

On the inside, Torqbyte PM4's electronics showcase our top two design goals: Quality and Reliability. PM4's design relies entirely on industrial-grade electronic components from the world's leading semiconductor companies including Texas Instruments, Infineon Technologies, STMicroelectronics, ON Semiconductor and Vishay Intertechnology.

Torqbyte PM4 kits are supplied with SAE J1127 10AWG SXL and TXL automotive wire with annealed stranded copper conductors and premium-grade abrasion, chemical and moisture resistant, high temperature Crosslinked Polyethylene insulation.

All pump power adapters are supplied with the thickest possible wire gauge for the given connector family ensuring minimum line loses and maximum power transfer to the LPFP.

Vehicle Compatibility 

PM4 is available in five kit options that cover most popular VAG application. Please check your factory FPCM and Fuel Pump Connector Part No.s to ensure you are ordering the correct kit.

FSI/TSI

FPCM (Black): 1K0 906 093_
FPCM (Blue): 3C0 906 093_
Fuel Sender Top Hat (Blue): 1K0 919 051 D_
Fuel Sender Top Hat (Yellow): 8J0 919 051 _

Fuel Pump Connector: 1K0 919 231

MQB AWD

FPCM: 5Q0 906 093
Fuel Sender Top Hat (Green): 5Q0 919 087 AH (Newer) or 5Q0 919 087 R (Older)

Fuel Pump Connector: 1J0 973 752

MQB FWD / B8 A4/A5/S4/S5

FPCM: 5Q0 906 093
Fuel Sender Top Hat (Blue): 5Q0 919 051 BK

FPCM: 8K0 906 093_
Fuel Sender Top Hat (White): 8K0 919 051 G

Fuel Pump Connector: 1K0 919 231

B7 A4/S4/RS4

FPCM: 4F0 906 093 F
Fuel Sender Top Hat (Green): 8E0 919 051 CQ

Fuel Pump Connector: 1J0 919 231

Brushless B8.5 A4/A5/S4/S5

FPCM: 4G0 906 093 J
Fuel Sender Top Hat (White): 8K0 919 051 AS

Fuel Pump Connector: 8K0 973 724

TorqVFM Software

In the factory configuration the OEM fuel pump control module receives pump duty commands from the ECU and converts them to actual pump duty. The relationship between the ECU-commanded duty and the actual pump duty is called Slope and is fixed for each OEM module part number. There is no way to monitor the ECU-commanded duty or the actual pump duty forcing users to sift though VCDS logs when fueling problems need to be diagnosed.

Torqbyte PM4 also receives its commands directly from the ECU, but allows the user to program in their own custom Slope values that are more or less aggressive than the nominal Slope of a vehicle's factory module. (Note: PM4 comes pre-programmed with from the factory with the optimal Slope characteristic so no programming is required prior to installation and operation).

PM4 is also equipped with a USB connector that allows it to communicate with a PC running our free TorqVFM software. With the TorqVFM software, the user can test and configure the unit as well as live view or log ECU-commanded duty vs. actual pump duty. PM4 and TorqVFM can be invaluable for diagnosing difficult fueling issues such as inability of the actual LPFP pressure to reach or or stay at the commanded target level.

The PM4 ships from the factory ready to install. Nothing is required to use it. However, if advanced features and functions are required, more information on the accompanying TorqVFM software can be found HERE.

Introduction:
As many of you know, the fuel system for the 2.0T FSI platform is composed of two separate systems: the high pressure system (50-130bar), and the low pressure system (3-5bar). While, the limitations of high pressure fuel delivery have been eliminated by varies products, The Low pressure system has been ignored!

Through our research and development here at USP Motorsports, we were able to determine that the low pressure fuel system is nearly maxed out when producing around 350whp, running an a/f ratio between 11.0:1 – 11.5:1. This limitation is a result of the in-tank fuel pump being maxed out. By replacing the factory in-tank fuel pump with an APR in-tank fuel pump, the low pressure fuel system sits on its limits at around 400whp, while still maintaining the same a/f ratio mentioned above.

Developing a low pressure fuel system to work properly with the complicated components and electronics of the 2.0T FSI was no easy task. The in-tank fuel pump that runs the FSI does not function like a traditional fuel pump. Meaning, the fuel pump does not always receive a full 12volt signal while the car is running like a traditional fuel pump does. Instead, the ECM controls the fuel pump through a Pulse-Width Modulated signal (PWM). This quickly ruled out the ability to add an inline fuel pump. Other options were explored but, adding a secondary in-tank fuel pump was the end result.

Function:
The main purpose of the USP Motorsports auxiliary fuel system is to provide enough fuel flow to the high pressure fuel pump to support 400+ horsepower safely. This was done by incorporating a secondary in-tank fuel pump that alone can support 600 horsepower. However, incorporating a secondary in-tank fuel pump by itself will not function properly as the FSI low pressure fuel system is return-less. To combat this issue USP Motorsports created a load-based fuel pump controller. The result is the secondary fuel pump only being turned on when it is needed.


This system is estimated to be good for around 700 wheel horsepower and is the same system used on our in-house MK5 GTI which produces 605whp

What is included:

• High flow in-tank fuel pump

• Load-based fuel pump controller

• Preassembled fuel lines and fittings

• Fuel distribution block w/check valve

• All wires, terminals, and connectors

• Detailed instructions

Click Here For Installation Instructions!

• Complete Plug-n-Play replacement for the factory Fuel Pump Control Module in late-model Volkswagen Automotive Group vehicles using high-capacity, aftermarket, in-tank Low Pressure Fuel Pumps (LPFPs), such as the Audi TTRS (VAG Part No. 8J0 919 051 E), DeatschWerks DW400, or the Walbro/TIA F90000267/F90000274 (450 LPH), Walbro/TIA F90000285 (525LPH)
• Interfaces directly with the ECU and eliminates diagnostic trouble codes (DTCs)
• Fully programmable/configurable pump duty slope control with our easy to use TorqVFM PC software
• TorqVFM 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
• PM4 is the first and only LPFP driver solution on the market that lets the ECU perform complete closed-loop control of the requested fuel system pressure regardless of what aftermarket LPFP is used. Want to run a 23A, 525LPH Walbro F90000285 E85 pump under full control of the ECU? PM4 will let you do that. The ability to use any aftermarket LPFP, while keeping the ECU in complete control of its operation, is a key distinguishing feature not available with any competing LPFP solution
• Supports big turbo setups by removing the traditional LPFP fueling bottleneck and permitting the fuel system to hold any ECU-requested pressure
• A truly scalable solution. A single PM4 can drive two LPFPs in parallel Regardless of the preferred fuel system configuration, the ECU retains complete control of the low-pressure fuel system's operation
• Works with any LPFP set-up that draws less than 36A at peak load and peak duty. With the PM4 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 PM4 you are not limiting your options by using a fueling solution that forces you to use only one vendor's ECU tuning suite.
• Compatible with voltage boosting modules and new high-voltage LPFPs rated for up to 20V
• Integrates seamlessly with the vehicle's factory electrical systems
• Supplied with vehicle-specific Plug-n-Play Harness Adapters that transfer maximum power to the LPFP sender through thick 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 endurance of the vehicle's OEM electronic modules
• Built and tested in Canada

Torqbyte PM4 is an advanced low-pressure fuel pump (LPFP) driver module designed as a complete Plug-n-Play replacement for the factory VAG fuel pump PWM control module in order to overcome the challenges of increased fueling in VAG returnless direct injection fuel systems where the ECU and the factory fuel pump pulse width modulator (PWM) control module perform closed loop control of the fuel system line pressure.

In the factory configuration, factory fuel pump control module is only capable of supplying enough current to drive the factory in-tank low pressure fuel pump the vehicle was originally equipped with. High capacity aftermarket in-tank fuel pumps generally draw more current than the factory control module was designed to supply.

Using high capacity fuel pumps often overloads the factory LPFP controller and causes it to overheat or overcurrent. This overloading and overheating results in intermittent pump operation, which causes a drop in fuel flow and line pressure as well as dangerous fuel cuts.

Many ECU tuning packages attempt to work around this problem by artificially limiting the maximum pump duty in an attempt to keep the pump current just below the factory controller’s shutdown threshold. This approach leaves a significant percentage of the aftermarket pump’s capacity unused thus defeating the whole purpose behind running a high capacity aftermarket fuel pump.

Torqbyte PM4 provides the best and most effective solution to this problem.

PM4 installs between the ECU and the upgraded fuel sender. PM4 is capable of continuously supplying the aftermarket fuel pump with up to 36A of current. This allows it to drive all of the popular aftermarket pumps such as the Audi TTRS (VAG Part No. 8J0 919 051 E), DeatschWerks DW400, or the Walbro/TIA F90000267/F90000274 (450 LPH), Walbro/TIA F90000285 (520LPH).

While the PM4 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 PM4 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 PM4, 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, PM4 is able to live-stream the ECU command duty as well as pump actual duty, over USB, to a laptop running the Torqbyte TorqVFM application. These logs can be invaluable in identifying tuning issues or diagnosing mechanical fuel system faults.

OEM Brushless to Single or Dual Brushed Pump Conversion

PM4 can also be used when upgrading the fuel system in VAG vehicles that originally came with an OEM brushless pump.

In these vehicles the brushless pump can be removed and replaced with a single or twin high capacity brushed pumps.

PM4 is supplied with Plug-n-Play wiring adapters that connect directly to the vehicle’s factory wiring. PM4 is housed in a rugged extruded aluminum enclosure that makes it suitable for installation under the rear seat.

On the outside, Torqbyte PM4 is enclosed in a thermally-conductive, CNC machined aluminum enclosure that is hard anodized for maximum durability.

On the inside, Torqbyte PM4's electronics showcase our top two design goals: Quality and Reliability. PM4's design relies entirely on industrial-grade electronic components from the world's leading semiconductor companies including Texas Instruments, Infineon Technologies, STMicroelectronics, ON Semiconductor and Vishay Intertechnology.

Torqbyte PM4 kits are supplied with SAE J1127 10AWG SXL and TXL automotive wire with annealed stranded copper conductors and premium-grade abrasion, chemical and moisture resistant, high temperature Crosslinked Polyethylene insulation.

All pump power adapters are supplied with the thickest possible wire gauge for the given connector family ensuring minimum line loses and maximum power transfer to the LPFP.

Vehicle Compatibility 

PM4 is available in five kit options that cover most popular VAG application. Please check your factory FPCM and Fuel Pump Connector Part No.s to ensure you are ordering the correct kit.

FSI/TSI

FPCM (Black): 1K0 906 093_
FPCM (Blue): 3C0 906 093_
Fuel Sender Top Hat (Blue): 1K0 919 051 D_
Fuel Sender Top Hat (Yellow): 8J0 919 051 _

Fuel Pump Connector: 1K0 919 231

MQB AWD

FPCM: 5Q0 906 093
Fuel Sender Top Hat (Green): 5Q0 919 087 AH (Newer) or 5Q0 919 087 R (Older)

Fuel Pump Connector: 1J0 973 752

MQB FWD / B8 A4/A5/S4/S5

FPCM: 5Q0 906 093
Fuel Sender Top Hat (Blue): 5Q0 919 051 BK

FPCM: 8K0 906 093_
Fuel Sender Top Hat (White): 8K0 919 051 G

Fuel Pump Connector: 1K0 919 231

B7 A4/S4/RS4

FPCM: 4F0 906 093 F
Fuel Sender Top Hat (Green): 8E0 919 051 CQ

Fuel Pump Connector: 1J0 919 231

Brushless B8.5 A4/A5/S4/S5

FPCM: 4G0 906 093 J
Fuel Sender Top Hat (White): 8K0 919 051 AS

Fuel Pump Connector: 8K0 973 724

TorqVFM Software

In the factory configuration the OEM fuel pump control module receives pump duty commands from the ECU and converts them to actual pump duty. The relationship between the ECU-commanded duty and the actual pump duty is called Slope and is fixed for each OEM module part number. There is no way to monitor the ECU-commanded duty or the actual pump duty forcing users to sift though VCDS logs when fueling problems need to be diagnosed.

Torqbyte PM4 also receives its commands directly from the ECU, but allows the user to program in their own custom Slope values that are more or less aggressive than the nominal Slope of a vehicle's factory module. (Note: PM4 comes pre-programmed with from the factory with the optimal Slope characteristic so no programming is required prior to installation and operation).

PM4 is also equipped with a USB connector that allows it to communicate with a PC running our free TorqVFM software. With the TorqVFM software, the user can test and configure the unit as well as live view or log ECU-commanded duty vs. actual pump duty. PM4 and TorqVFM can be invaluable for diagnosing difficult fueling issues such as inability of the actual LPFP pressure to reach or or stay at the commanded target level.

The PM4 ships from the factory ready to install. Nothing is required to use it. However, if advanced features and functions are required, more information on the accompanying TorqVFM software can be found HERE.

PART NUMBERS:
BLUE: TS-0401-1001
BLACK: TS-0401-1002

DESCRIPTION:
High-performance fuel pressure regulator. Features 1/8 NPT fittings, 30-70 PSI base pressure adjustments, 1:1 ratio.

APPLICATION:
Ideal for modified street cars with up to 800hp fuel systems using pump and E85 fuel.

SUPPLIED WITH:
Mounting bracket, vacuum fitting, gauge port blank.

Connectors – Adapters – Bosch Harness – USCAR injector