Flow rate increase over stock: +70% 
Geometric displacement (N55): 1.52cc/rev
 WHP potential on gasoline: 684whp
 WHP potential on E85: 575whp 
Commanded operating pressure (rail pressure): 250bar / 25MPa / 3625psi 

Tune Requirement: YES 
Tuning Suites: EcuTek, MHD, Bootmod3

The next amazing innovation by the DI Professionals at Nostrum High Performance: More flow at a lower price! This 1170-250 HPFP is the new standard for N55 high pressure fuel pumps, flowing +70% more than the stock pump and an additional 4% more than our original Big Bore high pressure fuel pump.

The biggest HPFP upgrade at the best price available on the market for N55 = The absolute best value! Now available through NHP, and also available through our successful collaboration with our friends at Precision Raceworks. 

Plug and Play install with zero hardware modifications (requires calibration). Everything you need for a fast and effective installation! With no modifications to your stock parts, the kit is fully reversible when time to move on to your next project!

Contents:

• High-capacity high pressure fuel pump
• All new low-pressure inlet tube with teflon internals
• All new stainless-steel high-pressure outlet tube
• Pump adaptation flange
• Flange alignment tool
• Electrical harnesses adapter
• Installation hardware (including ultra-low-profile bolt for knock sensor)
• Comprehensive installation guide in color
• Pump flow test data sheet

Key Differentiating Features:

• +70% more fuel flow than stock
• Detailed Install Guide included
• Tuning guides available
• All low pressure and high-pressure tubes are serialized and leak & pressure tested
• Every pump serialized and is tested dynamically at multiple engine relevant speeds and target pressures

Application list:

• 2011–2015 F30/F31 335i
• 2013–2016 F32/F33/F36 435i
• 2013–2016 F22/F23 M235i
• 2015–2016 F20/F21 M135i LCI
• 2012–2015 F20/F21 M135i
• 2016–2018 F87 M2 (Non-Competition)
• 2013-2017 F10/F11/F07 535i
• 2013-2017 F25/F26 X3/X4 35i
• 2014-2019 F15/F16 X5/X6 35i
• 2013-2018 F06/F12/F13 640i
• 2013-2015 F01 740i/Li

Performance Specs:

WHP potential on gasoline: 684WHP [Based on 6500 RPM power peak, 290 BSFC, 75% VE, 90% driveline]
WHP potential on E85: 575WHP [Based on 6500 RPM power peak, 360 BSFC, 75% VE, 90% driveline]
Tune Requirement: Yes (must have tune to start the vehicle)
Recommended Tuning Suite: EcuTek, Bootmod3, MHD
Flow rate increase over Stock: 70%
Geometric displacement: 1.516cc/rev
Max Operating Pressure: 240 bar / 24 MPa / 3500 psi

FAQ

Q: How does this differ from the Nostrum big bore HPFP kit (H086-0715)?

This pump is a different construction that provides a larger piston than the Big Bore while still providing 250bar fuel rail capability, all at a lower price point for the market! Not only is this Gauntlet pump a different architecture than the big bore, but it has also been updated with internals, spring, seat, fittings and seals.  It is as good as or better than the Big Bore! All it's waiting for is for you to snap your fingers and make the competition disappear! 

Q: Why does this pump look so different and weird?

The “Gauntlet” HPFP product line is constructed of cast stainless steel which allows compact design and results in the different surface finish than the Stanadyne machined pumps. 

Q: Is the quality of this pump as good as the big bore?

The “Gauntlet” HPFP product has more than 24 months of testing in vehicles (summer & winter), with more than 60,000 miles of on road experience in multiple vehicles with a range of test fuels including 93, pump e85, test e85, and intermediate blends (flex fuel vehicles). The design validation testing surpassed all specifications and standards! Design and development of the pump included computational fluid dynamics (for internal flows), kinematic analysis (for high rpm spring specification), finite element analysis (for structural and spring support development) as well as 120+ hours of component dynamic testing on a HPFP test bench. 

Q: Is this pump compatible with Dorch lift kits for n55?

The Gauntlet pump H086-1859 is compatible with the +38% N55 lift kit, as tested and validated.
However it is NOT compatible with the +49% N55 lift kit, as observed in an M235. The bypass rate of the Gauntlet pump is insufficient for high-flow rpm lifts and will exceed pressure targets, which isn’t necessarily a problem if you are using our injectors but may be problematic for other injectors.

Q: Can I install the pump at home? Is there an immediate tuning requirement?

Absolutely! All Nostrum products come with a detailed installation guide that shows you how to install your new parts every step of the way. Any additional pieces that might be necessary are included in the box. The only thing you need is your own tools and a can-do attitude. A tune is required for this pump. When you are ready to tune, we have calibration data and tuning guides available to your dealer, installer, or tuner. We do not recommend driving or starting the vehicle without a tune. 

Q: Will this work on my E9x N55 or N55 with an N54 style pump?

Our HPFP is NOT compatible with the early N55’s that had the N54 style HPFP. If you are not sure which pump you have, send us your vin and we can tell you!