Interesting! usually this is what the High Pressure Fuel Injection Pump is for. Weird they would need an additional pump, go figure!:smile:I thought the same thing but while at the tuner I asked what that was /is and he stated the high pressure fuel pump. There is a low pressure in the tank and high pressure that is mounted on top of the engine that is cam driven. I also saw this in a picture at the dealer and thought it was odd but that is the design for these.
Blessings and Peace