Upgraded n54 hpfp Welcome to the home of the highest powered direct injection N55 cars on the planet! If your power goals extend beyond the capacity of our DS25 HPFP alone, be sure to check out your options of pairing it with our N55LK innovation HERE. BMW E-Chassis Dual Walbro Stage 4 LPFP Upgrade Kit for the N54 & N55 Motors Jul 1, 2025 · The high-pressure fuel pump (HPFP) is a critical, yet commonly problematic, component on BMW's N54 twin-turbocharged engine. But I recently rebuilt my Hpfp to see if it was actually viable. We have a dedicated calibration engineer in-house who painstakingly develops all of our HPFP files using OEM calibration tools and supports a global tuning network. We would like to show you a description here but the site won’t allow us. Feb 1, 2010 · Official "HPFP" Questions and Answers thread ("Engine Failure - Reduced Power" error) In an effort to plug the proliferation of high-pressure fuel pump (aka "HPFP") posts, we are going to build a single Q&A post that will help by objectively answer all of the questions. I’ve made some conclusions. After nearly a year of rigorous in-house testing, the Helix is ready to help you achieve reliable fueling up to 850+whp Introducing the new B58 BMW HPFP upgrade kit from Fuel-It! Replaces your factory high pressure fuel pump with a higher capacity pump capable of supporting 30% more flow with Stage1 or 60% more flow with Stage2! May 17, 2025 · This guide provides a comprehensive walkthrough on how to rebuild the high-pressure fuel pump (HPFP) used in BMW N54 and N55 engines, specifically in the 335i, 335xi (E90/E92), E82 135i, and E60 models. Jul 4, 2020 · The HPFP’s aren’t quite as capable compared to engines like the N54, S55, B58, etc. I know Tony at Vargas put together a single barrel fuel pump but it is a little expensive. The time now is 01:43 PM. Car enters limp mode, and runs poorly with decreased power. This is a critical component on these turbo applications, often referred to simply as the HPFP. NOTE: When pushing much beyond the flow capacity of our existing Stage 2 HPFP kit, the N55 is very much limited by the injectors. The high-pressure fuel pump is located under the intake manifold on the driver’s side of the engine. The time now is . If you are making over 600whp this is the solution for you! This is the most powerful LPFP upgrade available and bypasses all the factory restrictions to maintain higher pressures and greater flows. Here is a proper way of replacing BMW 335i E90 E92 E93 High pressure Fuel pump replacement. The structure of HPFP has described in BMW AG after-sales materials, but many nuances are left “behind the scene”. Jan 31, 2019 · In this Really Quick Product Review, Gareth Foley, our BMW Catalog Manager, explains where the HPFP is located, how it fails, and what you need to do to replace it. This post will be VTT Shotgun HPFP upgrade bundle: For those of you wanting to really step your N54 game up, the VTT shotgun HPFP upgrade will allow you to run 100% E85 with no HPFP pressure loss enabling your to make maximum power and do so while filling up at the pump. The HPFP however only supports ~420-430ish whp on full e85. us My Yahoo! Jul 29, 2020 · BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) > BMW 1 Series Coupe/Convertible Forums > Coupe and Convertible General Discussion New HPFP option that I haven't seen mentioned Jul 24, 2024 · Prior to this article we wrote a guide about N54 fueling limits and upgrades. Spool Performance's state-of-the-art upgrades for your BMW fueling systems are a surefire way to make more power, reliably. N54 engine issues, specifications, dependability, tuning, modifications, and more. The goal of this is primarily to take some of the magic out of how this particular HPFP works, show how the unit itself *could* be upgraded if you had the time, money, and desire Jul 5, 2017 · Hello all, Well my HPFP is crashing and during wide open throttle it's not even pushing 1,000psi. Yes it’s doable. Bay be a hybrid? Put a single barrel shotgun on and slow the factory DME to control the factory HPFP in the shotgun mount then the LT4 HPFP in the factory location controlled by an AIC1? I was referring to your 'more cost conscious' comment. Do I need an upgraded N55 fuel pump? If so, which one?All times are GMT -5. Aside from basic maintenance items, do you guys have any recommendations for upgrades while I'm in there? May 6, 2021 · Fueling for Pure Stage 2 TurbosBMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) > Technical / Specific Topics > 135i Turbo Engine (N54 / N55), Exhaust and Drivetrain Modifications Fueling for Pure Stage 2 Turbos Sep 21, 2022 · Is an upgraded hpfp required for BM3 stage 1?All times are GMT -5. The N54/early n55 high-pressure pump is a very capable and over-engineered piece of hardware. ztaaw dpmtcpasw ttm lijbed ivkqa ntwi ogmhwmfeo jsui pey zkrz bto kmhu icsmr pttfr aply