My supercharger came with an inline pump and i hooked it up. The car is having trouble getting the volume of fuel to the engine under wot causing the fuel pressure to drop to 0 for a moment under hard acceleration. The in tank is original and worked fine the day of the install so is the inline causing a problem? I could be going 20 mph and floor it and it would downshift and haulass but not now. If i replace the in tank with an Walbro 255 will i be able to remove the inline one and be OK? I assume the fmu could be at fault. How is it checked?