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Fuel-It

Fuel-It BMW N55 Port Fuel Injection (MPI) Kit for E-Series (E82 E90 E92) – Aux Fuel Rail & Intake Manifold Spacer, Bosch 52lb Injectors – E85/Flex-Fuel, JB4 Compatible Secondary Fueling Upgrade for 135i 335i

Fuel-It BMW N55 Port Fuel Injection (MPI) Kit for E-Series (E82 E90 E92) – Aux Fuel Rail & Intake Manifold Spacer, Bosch 52lb Injectors – E85/Flex-Fuel, JB4 Compatible Secondary Fueling Upgrade for 135i 335i

£1,380.05
£0.00 £1,380.05
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Port Injection Package
Port Injection Controller
Return Kit (With FPR) & Injectors

Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

E-chassis N55 Port Fuel Upgrade by Fuel-It

Turn your boosted N55 into a smooth, dependable powerhouse with Fuel-It's proven port fuel system. This add-on rail and manifold plate supply the extra fuel your factory direct injection pump cannot deliver under higher boost and ethanol blends. Expect rock-solid lambda control, crisp drivability and the headroom needed for pump petrol or heavy corn content when tuned correctly. Ideal for standard or upgraded turbos, street and track.

We run these in-house and our customers love the consistency, the clean install and the results. It is tidy, reversible and built from quality components that just work.

Why this setup

  • Provides supplemental fuel so your DI system is no longer the bottleneck when chasing power
  • Supports high ethanol blends including full E85 with appropriate calibration
  • Neat fitment with no permanent cutting or drilling to the cylinder head or manifold
  • Premium hardware throughout including black anodised rail and spacer with flow-matched Bosch 52 lb per hour injectors
  • Proven reliability, steady AFR targets and excellent street manners

How it works

A precision spacer sits between the intake manifold and the head, providing mounting for a secondary fuel rail and six injectors. This auxiliary system supplements the stock direct injectors, giving you the fuelling capacity needed for more boost pressure and ethanol-heavy fuels while maintaining stable mixture control. The install is straightforward and can be returned to stock.

Package choices

Basic Kit

  • Custom black anodised manifold spacer
  • Matching black anodised secondary fuel rail
  • Black anodised aluminium and stainless hardware
  • Dual fuel supply port option for those retaining inlets in the factory location. For details email info@mjmodifications.co.uk
  • Optional return port for builds using an upgraded fuel pressure regulator
  • Six of each:
    • Flow-matched Bosch 52 lb injectors
    • Extended studs and required fasteners for the spacer
    • Genuine BMW gaskets

Bronze Kit

  • Everything in the Basic Kit
  • Entry-level line and fitting set:
    • Two bespoke fittings to retain the OE connections at the HPFP and the feed line entering the bay
    • -6AN 3/8 inch hose
    • High-flow Y-piece
    • 90 degree elbow for the rail connection

Silver Kit

  • Everything in the Basic Kit
  • Includes the Bronze line and fitting set
  • Upgraded feed hose that replaces the stock hard line entirely

Gold Kit

  • Everything in the Basic Kit
  • Includes the Bronze line and fitting set
  • Upgraded feed hose that replaces the stock line
  • Inline ethanol content sensor requires an analyser to view percentage

Platinum Kit

  • Everything in the Basic Kit
  • Includes the Bronze line and fitting set
  • Upgraded feed hose that replaces the stock line
  • Inline ethanol content sensor
  • Bluetooth analyser with JB4-friendly 0-5 V output
    • Integrates with JB4 via analogue input
    • Bluetooth app support for iPhone or Android. App purchase required

Vehicle fitment

E-series BMW with the N55 engine.

Pre-dispatch fitment check

We verify compatibility before shipping. Add your UK registration or the last seven digits of your VIN at checkout so we can confirm the correct setup for your car.

Installation

The system installs cleanly and is fully reversible. Professional fitting is recommended to ensure correct hose routing, leak-free connections and proper calibration.

Want it fitted by specialists We offer installation at MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Part number

E-N55-PI-BA-BA-BA-550

Manufacturer

Fuel-It

Warranty

12-month Fuel-It warranty.

Lead time and important notes

  • Built to order. Please allow approximately 2 working days before dispatch
  • For off-road use only
  • Ethanol sensors infer content based on the absence of petrol. Contamination can artificially raise reported ethanol percentage

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