The M10 factory head gasket specifications are 89mm Bore with a thickness of 0

By gradually increasing pipe diameters as the exhaust system moves away from the engine

it experiences atmospheric pressure

ECU values

Radium Engineering Fuel Pump Inlet Filter Sock Filter:14-0543 - 19 mm ID The M10 factory head gasketThese filters are compatible with gasoline and alternative fuels such as methanol, ethanol, E85, etc. 14 0143 FUEL PUMP INLET FILTER SOCK, 11MM ID This 65um (micron) pre filter sock press fits and uses a safety lock washer. It has been confirmed to work on the following popular in tank fuel pumps among others: Walbro 255 GSS341 Walbro 255 GSS342 Walbro F9000262 Walbro F9000267 Walbro F9000273 Walbro F9000274 Walbro F9000285 Walbro F9000295 AEM 50 1000