Walbro fuel pump upgrade Mazda miata Fuel pump upgrade for Mazda miata as a direct replacement for the original fuel pump. Flows up to about 400 hp on Ethanol and about 450 hp on gasoline at 4 bar backpressure (3 bar base pressure and 1 bar boost) Included parts: 255lph fuel pump Pre filter Fits: Mazda MX-5 1,6L B6 (miata) Flows: 255 liters / h. Output: 8mm hose connection Diameter: 39mm 500-550 hp on gasoline 400-450 hp on Ethanol / E85 Flow at 13.5V: 255 liter/h vid 3bar 230 liter/h vid 4bar 208 liter/h vid 5bar 178 liter/h vid 6bar 120 liter/h vid 7bar   Fuel hose for the fuel system in linked below. Note that the fuel pump hanger is not included