Nostrum – 4.0T Audi C7 Upgraded High Pressure Fuel Pump SET (H086-1380)

What sets the Nostrum 4.0T Audi High Pressure Fuel Pumps apart: Upgraded HPFPs using all-new Hitachi pump cores Every pump is serialized and coded, then flow tested in house at multiple vehicle relevant speed &fuel pressure points Direct fitment with no adaptors, comprehensive kit with everything required for an easy high-quality installation Detailed installation instructions Detailed tuning guide This pump set includes two upgrade high pressure fuel pumps and a special pressure sensor plug. The upgraded pumps provide a 33% displacement increase over stock fuel system and 22% higher operating pressure than the factory pumps, all fully ethanol compatibility. These pumps not only provide more high pressure fuel capacity, but they also provide a virtual injector increase of 11% through the new higher max operating pressure! Professionally assembled using all new parts, Nostrum pumps are 100% tested for leaks and dynamically tested at engine relevant rpms and target pressures to assure quality & performance. This kit upgrade with Dyno Spectrum tuning is capable of an amazing 666 ft-lbs of torque at just 3500rpm!!!! (as demonstrated on NHP’s stock RS7 development vehicle). Even with stock injectors, the vehicle is able to run out of mechanical fuel pump at low RPM. This kit upgrade with Dyno Spectrum tuning is capable of an amazing 666 ft-lbs of torque at just 3500rpm, while the higher operating pressure allows for more fuel delivery, increasing horsepower up top. This is basically a free injector upgrade, without having to go through a 22 hour injector install! Nostrum backs every part we sell with a limited lifetime warranty. All Nostrum products come complete with everything you need inside the box, including detailed installation instructions. Tuning guides are also available for your dealer or tuner. We have customer service and calibration engineers on staff to provide you with any support that you may need, from installation to tuning. What comes in the box: Two High Flow High Pressure Fuel Pumps Low pressure inlet fitting plug for passenger side HPFP All Installation Hardware Installation Guide Vehicle application list: Audi C7 RS7 2014-2018 Audi C7 RS6 2013-2018 Audi C7 S7 2013-2018 Audi C7 S6 2012-2018 Dyno graph sponsorship results: 2016 Audi S6 with upgraded turbos. Nostrum HPFPs, E70, Dyno Spectrum Stage 4 OTS. RS7 (no bolt ons) running E85 (certified fuel rating 85% ethanol) with Nostrum’s complete upgrade kit, stock turbo, Dyno Spectrum tune: 628whp@6730rpm / 666lbft@3590. At that whp level on E85 the injectors are at their limits (injector limited). The pump upgrade kit really allows for a huge build of low end torque that turns these 4.0L TT v8s into torque monsters! Below we can see the HPFPs in action running a higher than stock fuel pressure target of 16.5MPa, achieving and maintaining good actual to target pressures through the pull. This increased pressure capability allows the injectors more head room, equivalent to about 11% increase in stock injector flow rate. We validated the opening capability of the stock injectors with component level testing and in vehicle! *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. FAQ’s 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 lists for 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 a 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? 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).What happens is that 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.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 thenwe 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)!!!!