Fuel-It! Port Injection Kit - N54 Z4

Are you running more E85 or making more power on pump gas than your HPFP (High-Pressure Fuel Pump) can support?

Fuel-it has developed a port injection kit 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 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.

Port injection kits are offered in five different packages to meet your needs:

Base port injection kit: (included in Bronze, Silver or Platinum Kits)

  • Fuel-It! custom black anodized spacer for the intake manifold
  • Fuel-It! custom black anodized fuel rail
  • Black anodized aluminum and stainless steel hardware
  • Dual fuel supply port for those that are running inlets in the stock location (email us for info)
  • Optional return port for those that will be running an upgraded fuel pressure regulator 
  • Six of the following:
    • Flow matched Bosch injectors (52#)
    • Extended length steel bolts for mounting your new spacer 
    • BMW OEM gaskets

Bronze kit includes:

  • Base port injection kit
  • Basic fuel line connection kit
    • Two custom Fuel-It! fittings to maintain your stock fuel line connections at the HPFP and the feed line as it enters the engine bay
    • -6an (3/8") upgraded fuel lines
    • High flow custom Fuel-It! "Y" adapter
    • -6an fuel rail connection

Silver kit includes:

  • Base port injection kit
  • Basic fuel line connection kit​
  • An upgraded fuel line that completely replaces the stock fuel line

Platinum kit includes:

  • Base port injection kit
  • Basic fuel line connection kit​
  • An upgraded fuel line that completely replaces the stock fuel line​
  • Integrated ethanol sensor​
  • Bluetooth and JB4 compatible ethanol analyzer
    • JB4 integration compatible 0-5volt
    • Bluetooth (iPhone or Android app must be purchased to use this feature)

*These kits are available for off-road use only

*All port injection kits are built to order.

*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.

Are you running more E85 or making more power on pump gas than your HPFP (High-Pressure Fuel Pump) can support?

Fuel-it has developed a port injection kit 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 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.

Port injection kits are offered in five different packages to meet your needs:

Base port injection kit: (included in Bronze, Silver or Platinum Kits)

  • Fuel-It! custom black anodized spacer for the intake manifold
  • Fuel-It! custom black anodized fuel rail
  • Black anodized aluminum and stainless steel hardware
  • Dual fuel supply port for those that are running inlets in the stock location (email us for info)
  • Optional return port for those that will be running an upgraded fuel pressure regulator 
  • Six of the following:
    • Flow matched Bosch injectors (52#)
    • Extended length steel bolts for mounting your new spacer 
    • BMW OEM gaskets

Bronze kit includes:

  • Base port injection kit
  • Basic fuel line connection kit
    • Two custom Fuel-It! fittings to maintain your stock fuel line connections at the HPFP and the feed line as it enters the engine bay
    • -6an (3/8") upgraded fuel lines
    • High flow custom Fuel-It! "Y" adapter
    • -6an fuel rail connection

Silver kit includes:

  • Base port injection kit
  • Basic fuel line connection kit​
  • An upgraded fuel line that completely replaces the stock fuel line

Platinum kit includes:

  • Base port injection kit
  • Basic fuel line connection kit​
  • An upgraded fuel line that completely replaces the stock fuel line​
  • Integrated ethanol sensor​
  • Bluetooth and JB4 compatible ethanol analyzer
    • JB4 integration compatible 0-5volt
    • Bluetooth (iPhone or Android app must be purchased to use this feature)

*These kits are available for off-road use only

*All port injection kits are built to order.

*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.

T#: 403361 | Part#: FIEPIK3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Checking Vehicle Fitment...

Please ensure your correct model is selected

Does NOT fit your Change Vehicle

Fits your Change Vehicle

Change Vehicle

Starting at $1688.99
1688.99 $1688.99
This product is backed by our
Lifetime Replacement Program! Read more here
Free Shipping
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 21, 2026
Qty

Select Options

Fuel-It! Fuel-It! Port Injection Kit - N54 Z4 FIEPIK3
E-Series Bronze Port Injection Kit
Fuel-It! - Corporate Logo
T#: 403522
|
Part#: BMW-E89PI-BR
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 21, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$1299.99
Qty: 1
Fuel-It! Fuel-It! Port Injection Kit - N54 Z4 FIEPIK3
E-Series Silver Port Injection Kit
Fuel-It! - Corporate Logo
T#: 403524
|
Part#: BMW-E89PI-SI
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 21, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$1339.99
Qty: 1
Fuel-It! Fuel-It! Port Injection Kit - N54 Z4 FIEPIK3
E-Series Platinum Analog Port Injection Kit
Fuel-It! - Corporate Logo
T#: 403523
|
Part#: BMW-E89PI-PLA
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 21, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$1649.99
Qty: 1
Fuel-It! Fuel-It! Port Injection Kit - N54 Z4 FIEPIK3
E-Series Platinum Raw Port Injection Kit
Fuel-It! - Corporate Logo
T#: 403525
|
Part#: BMW-E89PI-PLR
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 21, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$1649.99
Qty: 1
Fuel-It! Fuel-It! Port Injection Kit - N54 Z4 FIEPIK3
Split Second N54 JB4 Integrated Port Injection Controller
Fuel-It! - Corporate Logo
T#: 403506
|
Part#: ACC-SSPI-E54I
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 21, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$389.00
Qty: 1
Fuel-It! Fuel-It! Port Injection Kit - N54 Z4 FIEPIK3
Split Second N54 JB4 Flash Only Port Injection Controller
Fuel-It! - Corporate Logo
T#: 403507
|
Part#: ACC-SSPI-E54FO
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 21, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$400.00
Qty: 1
Fuel-It! Fuel-It! Port Injection Kit - N54 Z4 FIEPIK3
BMS N54 JB4 Port Injection Controller
Fuel-It! - Corporate Logo
T#: 403508
|
Part#: ACC-SSPI-E54BMS
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 21, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$329.00
Qty: 1
None
Return Kit With Fuel Pressure Regulator
Fuel-It! - Corporate Logo
T#: 403500
|
Part#: BMW-EPI-RKR
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 21, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$375.00
Qty: 1
Fuel-It! Port Injection Kit - N54 Z4
$1688.99