The BMW M2, with its potent N55 engine, often leaves enthusiasts craving more power. One of the critical components for increased performance is the High-Pressure Fuel Pump (HPFP). Upgrading the HPFP ensures sufficient fuel delivery to support higher boost levels and more aggressive tunes. This guide explores various Bmw M2 Hpfp upgrade options available in the market.
HPFP Upgrade Options for the N55 Engine
Several aftermarket companies offer HPFP upgrades designed to outperform the stock N55 HPFP. Here’s a breakdown of the leading contenders:
XDI HPFP
- XDI-35: Offers approximately 36% more fuel flow compared to the stock pump.
- XDI-60: Provides around 60% more fuel flow over the OEM pump.
Key Features:
- Warranty: Typically comes with a 1-year warranty.
- Tuning Compatibility: Supported by popular tuning platforms like MHD and BM3.
- Vehicle Compatibility: Primarily designed for F-series N55 engines.
- Pricing: Generally considered the most expensive option.
Spool Performance HPFP
- FX-150: Delivers roughly 50% more fuel flow compared to the stock pump.
- FX-180: Boasts an impressive estimated 78% increase in fuel flow over stock.
Key Features:
- Warranty: Often backed by a lifetime warranty.
- Tuning Compatibility: May require custom tuning solutions as compatibility with MHD and BM3 may vary.
- Vehicle Compatibility: Compatible with both F-series N55 and B58 engines.
- Pricing: Significantly more affordable than XDI options.
Dorch Engineering HPFP
- Stage 1: Provides approximately 44% more fuel flow over the stock pump.
- Stage 2: Offers around 75% more fuel flow compared to the OEM pump.
Key Features:
- Warranty: Reportedly offers a lifetime warranty, though confirmation from their official website is recommended.
- Tuning Compatibility: BM3 tuning support is confirmed. Compatibility with MHD may vary and potentially require custom tuning. Dorch Engineering offers free bin file adjustments for custom tuning.
- Vehicle Compatibility: Compatible with both F-series N55 and B58 engines.
Utilizing the B58 HPFP in the N55
Interestingly, the HPFP from the B58 engine can also be considered an upgrade for the N55:
- B58C (Bosch HDP5 evo): Capable of up to 250 bar fuel pressure and flows around 0.897 cc/rev, resulting in approximately 7% more fuel flow compared to the stock N55 pump. The specific flow rate depends on the cam profile and engine application.
- B58D (Bosch HDP6): Supports up to 350 bar fuel pressure and boasts a flow rate of approximately 1.107 cc/rev, resulting in around 32% more fuel flow. This pump is found in the Toyota Supra, European Z4 M40i models, and other BMW and Mini vehicles equipped with the B48 engine. Like the B58C, the flow rate is dependent on the engine and cam profile.
Nostrum HPFP Upgrade
- Nostrum HPFP: Offers approximately 63% increased fuel flow over the stock N55 HPFP.
Key Features:
- Warranty: Lifetime warranty.
- Tuning Compatibility: Primarily designed for Ecutek tuning platform. BM3 compatibility is anticipated. MHD compatibility is unconfirmed.
- Vehicle Compatibility: Designed for F-series N55 engines.
Conclusion
Upgrading your BMW M2’s HPFP is crucial for maximizing performance potential when increasing boost and implementing more aggressive tunes. The options outlined above provide a range of choices to suit different budgets and performance goals. Carefully consider your tuning plans, budget, and desired power output when selecting the appropriate HPFP upgrade for your BMW M2. Always verify compatibility and specifications with the manufacturer or a qualified BMW specialist before making a purchase.
