New fuel pump

Walbro pump

Walbro pump

With the car currently running 1 bar of boost pressure (~0.2 bar above standard) I thought it best to upgrade the stock fuel pump to a Walbro 255lph pump. These are a regular upgrade on most performance cars to beef up the fuel system. A better fuel pump can provide more fuel at higher pressures for longer. It prevents any danger of the engine being starved of fuel, running too lean and causing internal damage. It also means the Evo can take a hike in boost levels from its current 1 bar of boost in the future, to make it accelerate even harder.
The pump is now a lot more audible than the stock pump as it whines away when running but I feel more comfortable that the car won’t be running lean any time soon.