This product is exclusive to AMR Performance - visit amrperformance.com to purchase!
Introducing the 1150-250 HPFP kit for your M276 powered Mercedes! We partnered with NHP to bring you a simple, comprehensive fueling solution to push the limits of your big turbo C43 AMG or C450 AMG!
Perfect for big turbos and built engines, the 1150-250 Big Bore pump moves a massive 63% more fuel than what the stock pump is capable of. If you’re looking to make 500+ WHP on pump E85, this is the one you need!
Like the 1050-250, the Big Bore pump is 250 bar capable and allows you to run E85 straight from the pump without having to blend. Put down the calculator and pick up the yellow handle!
Everything you need to install your new HPFP is included in the box. We wanted to make it simple for you to go fast! With detailed installation instructions and a comprehensive tuning guide for AMR’s Comport software, installation and setup is a breeze.
Every Nostrum part is backed by our limited lifetime warranty, offering you peace of mind and confidence in your purchase. We provide comprehensive solutions that come complete with all the necessary components and expert support, from installation to tuning, thanks to our in-house customer service and calibration engineers.
Upgrade your fuel system with confidence and take your performance to the next level with Nostrum!
What comes in the box:
- Serialized and tested 1150-250 high pressure fuel pump assembly
- Serialized and tested stainless-steel high-pressure fuel line with OE spherical fittings
- Serialized and tested Teflon lined low pressure fuel line assembly
- Pump mounting flange
- Electrical harness adapter
- Abrasion sleeve for low pressure fuel line
- Installation hardware
- Flange installation alignment tool
- Detailed AMR branded installation guide
- Pump test data sheet
- AMR warning cards
Vehicle application list:
- 2017-2021 W205 C43 AMG
- 2017-2021 W253 GLC43 AMG
- 2015-2017 W205 C450 AMG
- M276.8 used in W205 C43 AMG vehicles and X253 GLC 43 AMG vehicles
- OEM Pump interchange PN: 278-070-11-01
Recommended tuners:
Dyno graph sponsorship results:
TBD
*Horsepower and Torque numbers are approximate and can vary significantly depending on numerous factors including what supporting upgrades are done to the vehicle, ambient temperature, elevation, road surface, tire selection & condition, fuel octane and quality, vehicle weight, and more. The advertised numbers herein are based on optimal conditions and utilizing proper supporting modifications. Your results may vary.
Frequently ask questions:
Q: How come your pump is only 250 bar capable? The competition is claiming their pump can do more!
A: Don’t be fooled by the competition’s creative math and false claims. The AMR 1050-250 and 1150-250 pump kits can run sustained fuel rail targets of 25MPa. The surface area of the Bosch HPD5 high pressure fuel pump’s 9mm piston is 63.585mm^2 and the AMR 1050-250 is a surface area of 86.546mm^2, working out to be 36% larger in surface area, the AMR 1150-250 has a surface area of 103.82mm^2, and is 63% larger than stock. Competitors will try to convince you to run 35MPa, but the fuel rail pressure sensor on the M276 engine will only read 0-5 volts up to 280MPa, making it impossible to run 35MPa as claimed by the competition! Every serialized fuel pump is packed with its dynamic production pump testing data sheet, showing you the fluid flow capacity (on Viscor 16A test fluid) for your serialized pump!
Q: Why do your numbers say I will make less horsepower on E85 than 93 octane?
A: Great question! The numbers we list in the product descriptions are similar to the numbers a turbo charger manufacturer lists for their turbo’s air flow. The numbers are the "fuel system capacity to generate power" regardless of the other engine system limitations (air handling, mechanical limitations, knock propensity). Essentially the numbers are calculated assuming "sufficiently large air flow", "sufficiently capable mechanical assemblies", and disregarding knock limits. The equation uses actual observed engine volumetric efficiency (when available from sponsorship vehicles) and fuel capacity (including target pressures) to calculate power. Gasoline has more energy per mass volume than E85, so the higher fuel flow capacity will mathematically generate higher power potential for gasoline than a high ethanol content fuel. The other variables (air flow, spark, rotating assembly strength, charge cooling, mechanical assembly strength) are highly variable from build to build. This is why we state horsepower capacity for the fuel system – representing the potential of the fuel system if you have all the other aspects of your build addressed!
Q: Why can't I run straight ethanol with your pump? (FAQ Posted 6/9/23)
A: This is incorrect! We highly recommend running E85 from the pump on our products! Intermediate ethanol blends, like E30 to E50, are problematic (with any fuel system, stock and aftermarket). This is because Ethanol is a polar liquid, and all petroleum distillates are nonpolar; this means most things that can dissolve in Gasoline, are not soluble on Alcohol, and vice versa. Fuel manufacturers know this and choose their additive packages accordingly. Problems arise when you take E85 and then blend it down to ~E30 - E50 with gasoline. At these concentrations some of the gasoline additives will come out of solution, and they form a slimy, sticky residue that clogs everything up. It seems to be regional and seasonal in nature, which makes sense when you consider that E85 blends vary with the seasons. Running straight gasoline through the fuel system seems to fix it. If you choose to run intermediate blends then we do recommend that you run straight 93 gasoline from time to time to as a fuel system maintenance practice. That being said, we absolutely highly recommend pulling up to the pump and going full Pump E85 (P-E85)!!!!
