Dorch Engineering B58 Gen1 DS25 HPFP Upgrade

From the creators of the worlds first B58 direct-injection fueling upgrades, comes our next generation of pumps. Our widely successful Dorch Stage 2 (DS2) has been replaced with our latest and greatest creation; the DS25! This new pump is our Stage 2.5 which has been completely redesigned and optimized from the ground up. Externally weve updated the packaging to provide exact OEM hose routing for ZERO interference when changing out coil packs or spark plugs. Theres no cutting, no bending, no crimping, etc. This kit drops right in with full control from the DME, just like factory. Internally, weve re-worked the pressure chamber, spring rates, plunger depth, and completely optimized the volumetric efficiency of the pump.

What does this mean? It means the most reliable and highest flowing B58 pump on the market just got even MORE reliable and even MORE flow! The DS25 is also designed to run efficiently all the way up to 250 bar in order to maximize the flow potential of upgraded DI injectors:

Software changes are required to run this pump. If usingBootmod3,MHD, orMG Flasher, simply check the box for our pump upgrade when flashing. Otherwise, please send your .BIN file to [email protected] for the appropriate software implementation via WinOLS.

Beyond the pump performance, why choose Dorch?

• PLUG AND PLAY:This is theONLYtrue plug and play OEM fitment option on the market. Our kit includes our 250 bar capacity hardline to effortlessly connect our HPFP to your fuel rail (versus the time consuming process of bending and damaging the OEM line to fit).
• LIFETIME WARRANTY:The reason we can offer this is simply because our pumps are THAT reliable. That said, on the slim chance you have an issue, weve got your back!
• CUSTOMER SUPPORT:Ask around! Its no secret that we offer unrivaled 24/7 support with REAL help. Youre an email away from professional engineers, technicians, and our tuner, who can solve anything you throw at them.
• TUNING SUPPORT:We arent just a hard parts manufacturer. 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.

Kit Contents:

• Dorch Lifetime Warranty
• HPFP w/ Hardware
• Dorch High Pressure Line
• PTFE Low Pressure Line
• Low Pressure Hose Bracket
• Plug and Play Adapter Harness

Kit Fitment:

BMW F20/21 140i, 140xi
F22/23 240i, 240xi
F30/31/34 340i, 340xi
F32/33/36 440i, 440xi

G30/31 540i, 540xi*
G32 640i, 640xi*
G11/12 740i, 740xi*

G01 X3 m40i*
G02 X4 m40i*

* ONLY UP TO 2019 Model Year
KIT NOT COMPATIBLE with Gen2 B58 Vehicles

Installation Instructions:

B58 Gen1 HPFP Installation