Dorch Engineering BMW N55 Lift Kit – HPFP Upgrade

Price range: 1,089.99€ through 1,539.99€

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In Stock - Available from Supplier Dispatch between 22 October - 5 November.

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24/7 SUPPORT

The Dorch Engineering N55 Lift Kit – HPFP Upgrade, a game-changing fuelling solution for the BMW N55 community, delivering up to 49% more fuel flow when paired with any of our existing N55 HPFP kits. This innovative upgrade allows higher horsepower capabilities than ever before using the OEM direct-injection fuel system, providing the fuelling capacity needed for high-boost, big-turbo, and ethanol-powered builds.

The N55 Lift Kit – HPFP Upgrade starts with Genuine BMW vacuum pump cores, where we install our proprietary Dorch Engineering cam using precision manufacturing tools and advanced validation equipment. The result is a clean, simple solution that dramatically increases fuel flow, all while retaining OEM reliability and utilizing the safety and sophistication of the factory DME. Unlike traditional fuelling upgrades, this system requires no cutting, bending, or crimping — it drops in like a factory part, seamlessly integrating into your N55 fuel system.

Best of all, the N55 Lift Kit – HPFP Upgrade works with factory DME logic, meaning no special tuning is required to get started, and all OEM safety protocols remain intact. For N55 enthusiasts pushing for big power on direct injection, this kit provides unmatched fuel flow potential with OEM-level fitment and reliability. Whether you’re chasing record-breaking horsepower or just want the most efficient fuelling solution available, the Dorch Engineering N55 Lift Kit – HPFP Upgrade is the ultimate performance upgrade for your BMW N55-powered F2X M135i/M235i, F3X 335i/435i, and F87 M2.

N55 Lift Kit Size	HPFP Version	MINIMUM E10 Power Requirement	MAXIMUM E10 Power Capacity	MAXIMUM E85 Power Capacity
+38%	DS15	N/A	700whp	560whp
+49%	DS15	N/A	750whp	610whp
+38%	DS25	430whp	900whp	690whp
+49%	DS25	500whp	1000whp	770whp

When combining the N55 Lift Kit – HPFP Upgrade with the Dorch DS25 HPFP (or DS2), it’s important to understand that there is a minimum power requirement for proper operation. This minimum power threshold ensures that your BMW N55 engine can be tuned easily and operate smoothly, maintaining OEM-like drivability. Running the N55LK + DS25 HPFP combo on lower power setups can create unnecessary challenges for your tuner, complicating the calibration process.

However, when combining the N55 Lift Kit – HPFP Upgrade with the Dorch DS15 HPFP (or DS1), there is no minimum power requirement. This makes the N55LK + DS15 HPFP combination the ideal fueling upgrade for a wide range of builds, from mild to high-power setups. With 49% more fuel flow on tap, this pairing supports everything from upgraded turbo setups to ethanol blends, while still maintaining OEM-level reliability and smooth drivability.

It’s important to note that software calibration changes are required to properly run the N55 Lift Kit – HPFP Upgrade. To make tuning easy, Dorch Engineering offers preset, optimized maps available through Bootmod3, with MHD support coming soon. Simply check the box for the appropriate “Lift Kit” upgrade when flashing your tune, and you’ll unlock the full potential of your N55 fuel system upgrade.

Whether you’re looking to maximize the performance of your N55-powered BMW M135i, M235i, 335i, 435i, or F87 M2, the Dorch Engineering N55 Lift Kit – HPFP Upgrade provides the fuelling capacity, tuning flexibility, and proven reliability to support your performance goals.

PURCHASE INCLUDES

Dorch Lifetime Warranty
Dorch Vacuum Pump Assembly
Dorch HPFP LK Mounting Flange
Vacuum Pump Sealing Cap
Vacuum Pump Gasket

APPLICATIONS

2012-2015 BMW N55 F20/F21 BMW M135
2014-2016 BMW N55 F22 M235i
2012-2015 BMW N55 F30/F31 335i
2013-2016 BMW N55 F32/F33/F36 435i
2016-2018 BMW N55 F87 M2
2013-2017 BMW N55 F10 535i
2013-2017 BMW N55 F10 535i
2013-2017 BMW N55 F25 X3 F26 X4 35i
2013-2018 BMW N55 F15 X5 F16 X5 35i

NOTES

When pushing much beyond the flow capacity of our existing Stage 2 HPFP kit, the N55 is very much limited by the injectors. In order to see the full potential of this upgrade, it is highly recommended to upgrade to the larger S63 EU5 Injectors. These are OEM BMW injectors that flow up to 800whp on full E85.

*ONLY 2013+ models with OE Bosch HPFP
KIT NOT COMPATIBLE with 2011-2012 N55 Vehicles
NOT COMPATIBLE WITH OEM HPFPs

INSTALATION INSTRUCTIONS

N55 HPFP LK Installation

ADDITIONAL INFORMATION:

Brand	Dorch Engineering

PREPREG is a common term for a reinforcing fabric such carbon which has been pre-impregnated with a resin system. This resin system (typically epoxy) already includes the proper curing agent. As a result, the prepreg is ready to be laid into the mold without the addition of any more resin. In order for the laminate to cure, an autoclave production process is used, a combination of high pressure and heat.

Maximum strength and performance characterictics. In a hand layup production process, it is difficult to achieve 50% fabric and 50% resin content. Typical hand laminates, even when vacuum bagged, end up with a significant amount of excess resin. Excess resin increases brittleness and reduces overall strength properties. On the other hand, most prepregs contain around 35% resin. This is ideal for maximum cured properties and generally impossible to achieve in normal hand lamination.
Uniformity and repeatability. The prepreg is of uniform thickness and each part coming out of the mold may theoretically be the same. Vacuum bagging technology may have some errors in processing, but prepreg ensures production consistency.
Reduce curing time. After the thermal curing cycle, no need to wait for the standard 48 hours can be fully cured.
Aesthetics. Although prepreg processing still requires mold preparation and demoulding, prepreg processing eliminates air bubbles, makes it easier to obtain a smooth, glossy surface as well as eliminates any seaming lines.

We offer free tracked shipping on all orders within mainland EU. Orders to remote areas such as Malta, Cyprus, and Iceland may incur a surcharge. Worldwide shipping is also available—please contact us for a quote.

Most orders dispatch within one business day (Monday to Friday). EU delivery takes 3–5 working days from dispatch, and tracking details will be provided via email once your order has shipped.

Please note that import taxes may apply outside the EU, and these are the responsibility of the buyer. Some items may ship directly from our suppliers and may have varying delivery times. If an item is out of stock, we will contact you to discuss the available options.

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RETURNS

Changed your mind? You can return unused, uninstalled items in original packaging within 30 days of delivery. Return shipping is the customer’s responsibility unless the item is faulty.

Custom, used, or built-to-order items are non-returnable.

Once we receive and inspect your return, refunds are typically processed within 10 business days.

If your item is damaged or incorrect, contact us within 48 hours with photos and order details.

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WARRANTY

All VA and VA Motorsports products come with a 1-year limited warranty covering manufacturing defects and fitment issues. For third-party items, warranty terms vary by brand—please check the product listing or contact us for details.

This warranty does not cover wear and tear, incorrect installation, cosmetic damage, labor, or third-party costs.

To start a claim, email us with your order number, issue description, and photos. If the claim is approved, we’ll offer a replacement, store credit, or a refund.

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