![APR High Pressure Fuel Pump | MK2 TT RS F90 M5 Competition 4.4L Turbo V8 [S63] The factory airbox is manufactured](https://cdn.shopify.com/s/files/1/0635/0032/1015/files/APRHighPressureFuelPumpMK2TTRS.png?v=1687474459)
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The factory airbox is manufactured to dampen all engine noise which means adding power-killing flow restrictions
United Motorsport is the way to go
The IE FDS intercooler is also a direct fit
no rev hang
APR High Pressure Fuel Pump | MK2 TT RS F90 M5 Competition 4.4L Turbo V8 [S63] The factory airbox is manufacturedThe APR High Pressure Fuel Pump (HPFP) increases maximum volume of fuel the HPFP can deliver by 30% over stock! In doing so, the direct injection fueling system is capable of satisfying fueling requirements set forth by high horsepower setups. This is accomplished by increasing the displacement of the pump using high quality components to exacting tolerances. A low pressure fuel pump (LPFP) in the fuel tank delivers fuel to the high pressure fuel pump
