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BMW M2/M3/M4 Stage 4 Fuel System Upgrade for the S55 Motor Fuel-It! Complete Stage 4 upgrade kit Include the standard 750cc injectors Do NOT include a flex fuel kit
BMW M2/M3/M4 Stage 4 Fuel System Upgrade for the S55 Motor Fuel-It! Complete Stage 4 upgrade kit Include the standard 750cc injectors Add flex fuel kit (+ $319)
BMW M2/M3/M4 Stage 4 Fuel System Upgrade for the S55 Motor Fuel-It! Complete Stage 4 upgrade kit Include the standard 750cc injectors I have one and only need the fittings installed. (+ $69)
  • Load image into Gallery viewer, BMW M2/M3/M4 Stage 4 Fuel System Upgrade for the S55 Motor Fuel-It! Complete Stage 4 upgrade kit Include the standard 750cc injectors Do NOT include a flex fuel kit
  • Load image into Gallery viewer, BMW M2/M3/M4 Stage 4 Fuel System Upgrade for the S55 Motor Fuel-It! Complete Stage 4 upgrade kit Include the standard 750cc injectors Add flex fuel kit (+ $319)
  • Load image into Gallery viewer, BMW M2/M3/M4 Stage 4 Fuel System Upgrade for the S55 Motor Fuel-It! Complete Stage 4 upgrade kit Include the standard 750cc injectors I have one and only need the fittings installed. (+ $69)
*item may differ from images

BMW M2/M3/M4 Stage 4 Fuel System Upgrade for the S55 Motor

MyPartsGuy SKU: Fulfilled by Fuel-It!
Fuel-It!
$4,325.00 CAD
$4,325.00 CAD
CURRENTLY SOLD OUT

IN STOCK Orders Are Processed and Leave Ottawa Warehouse In 3-10 Days.

SPECIAL ORDERS May Take 2-8+ Weeks.

NO BROKERAGE FEES - NO CUSTOMS FEES - NO DUTIES

This is a special order part. It will be ordered for you from the manufacturer. Contact us is you have a deadline.➀

🗙

What does "Special Ordered" mean?

This means that we do not have the product in our warehouse. We only order “Special Order” products from the supplier when you order them from us. Generally, we do not intend to keep an inventory of these items.

“Special Order” products could be shipped directly from the supplier or they could be shipped to us first. Then, we would ship it to you. The available shipping options will be provided during the checkout process."

Are you running more E85 or making more power than your stock fuel system can support?

We have developed a port injection kit and LPFP upgrade (Low Pressure Fuel Pump) for your S55 that will provide you with the additional fueling capacity that you need to be able to run up to 100% E85 on stock or upgraded turbos.

What is port injection?

Port injection is a kit that is installed between your intake manifold and the cylinder head that runs off the low pressure fuel supply to provide you with more fueling than your stock system is capable of.  It's a relatively easy system to install and does not require any permanent modification to your car.

What is the Stage 4 LPFP upgrade?

This upgrade is an E85 compatible dual pump system that doubles the factory capacity and is required when looking to make more than 600whp on E85.

 

Stage 4 kit includes:

  • Port Injection kit
    • Fuel-It! custom black anodized spacer for the intake manifold
    • Fuel-It! custom black anodized fuel rail
    • Black anodized aluminum and stainless steel hardware
    • Six of the following:
      • Flow matched Bosch injectors (750cc) 
      • BMW OEM gaskets
  • Stage 4 LPFP Upgrade
    • OEM Flex Fuel pump
    • Secondary pump (Walbro 450)
    • Dual -6an E85 compatible feed lines
    • Dual input E85 compatible fuel filter
  • Return kit
    • Fuel Pressure Regulator (1:1 boost referenced)
    • Return line
    • Silicone boost reference line and fittings
  • Optional
    • 950cc injector upgrade
    • Ethanol Sensor and Bluetooth Analyzer upgrade
      • Continental Ethanol sensor
      • 3/8" Cam-Lock style fittings 
      • Bluetooth Analyzer (iPhone or Android app must be downloaded to use this feature)

Recommended accessories:

  • F-series lockring removal tool
    • https://fuel-it.com/products/bmw-mini-fuel-pump-lock-ring-removal-tool
  • Hobb's switch
    • https://fuel-it.com/products/hobbs-switch

Applications

BMW M2 
• 2018-2021 M2 Competition (S55 Engine)

BMW M3 
• 2015-2020 F80 M3 including Competition

BMW M4
• 2015-2020 F82 F83 M4, M4 GTS, M4 CS including Competition

  • Install guides can be found here:

    • Secondary pump wiring guide
      • https://www.dropbox.com/s/om5lf3s26gwqc02/Stage%203%20install.pdf?dl=0
    • BMS port injection controller
      • https://www.jb4tuned.com/fuelit_eth_pi_wiring.htm
    • Flash Only port injection controller
      • https://www.dropbox.com/s/bma0y8in0g35i5u/Flash%20Only%20controller%20wiring.pdf?dl=0
    • Flex Fuel kit
      • https://www.jb4tuned.com/fuelit_eth_pi_wiring.htm
    • Hobb's switch diagram
      • https://www.dropbox.com/s/og1r66usv8ycw7x/Hobb%27s%20switch.jpg?dl=0
    • System Diagram
      • https://www.dropbox.com/s/fcd6rt8pouxbtdn/F-Series%20Stage%204%20fuel%20system%20diagram.jpg?dl=0

*These kits are available for off-road use only

*All port injection kits are built to order so please allow 5-7 business days for shipping.

*Ethanol Sensors don't actually read the ethanol content, the readings are based on the absence of gasoline, so if your fuel is contaminated, your ethanol readings may be artificially elevated.


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