Spool Performance Helix HPFP Overdrive Unit

Introducing the Spool Performance Helix HPFP Overdrive Unit, a revolutionary solution for N54/early N55 enthusiasts looking to overcome high-pressure fuel limitations. The Helix system functions as a planetary gearbox for your High-Pressure Fuel Pump (HPFP), increasing shaft speed and fuel displacement. This advanced design helps maintain rail pressure during high-performance tuning, eliminating the need for a secondary port injection system.

Key Features:

• Increased Shaft Speed: The planetary gearbox design boosts fuel displacement, providing more delivery strokes per cycle.
• Improved Fuel Flow: The Helix supports up to 600whp on full E85 and 750+ on E60 mixes, while the Helix Xtreme variant supports 750whp on E85 and 850+ on E60 blends.
• N54/early N55 Compatibility: Designed specifically for BMW N54/early N55 platforms, addressing the HPFP limitations without additional complexity.
• Complete Kit: Includes billet vacuum cover mounting plate, support bracket, and necessary hardware.
• Longevity Testing: Thoroughly tested to avoid common HPFP failure modes, ensuring reliability with extended E85 use.

Why You Need It: As you push your engine's performance with more power, the stock HPFP can struggle to maintain adequate fuel pressure. The Helix overdrive system increases pump displacement by spinning the HPFP faster, enabling it to meet the demands of high-horsepower tuning setups.

Fueling Limits:

• Helix: Supports up to 600whp on E85 and 750+ on E60 mixes.
• Helix Xtreme: Capable of 750whp on E85 and 850+ on E60 or gasoline blends.

Concerns on HPFP Longevity: Extensive testing has been conducted to ensure overdriving the pump does not lead to premature failures. Common HPFP issues, such as inlet metering valve actuation failure or limp home mode bypass valve leakage, are not exacerbated by the increased shaft speed provided by the Helix.

Tune Changes: To fully utilize the Helix system, specific tuning adjustments are required. Spool Performance provides the necessary calibration changes in collaboration with major tuners.

About Spool Performance: Spool Performance delivers innovative fuel solutions for BMW enthusiasts, with a strong commitment to quality and reliability in every product they offer.

Note: 'New' merchandise may be returned for exchange or refund within 15 days from the date of shipment. 'New' merchandise must be unused and free from installation or mounting damage. Installation or modification of parts waives your right to returns, refunds, or exchanges.