I'm converting from carb to TBI and using a frame mounted electric fuel pump. I mounted it in a convenient low place on the frame, but now I'm being told that maybe it's too far from the tank? Does it really matter? It doesn't seem like it's any harder for a pump to pull fuel through a line than it is to push it, is it? Also, does it matter if the pump is high or low relative to the tank? I opted for low, but to get closer I'd have to go higher, like up above the rear axle. It seems like that could be bad sometimes, like the pump would have to suck air for a while before getting gas. At the low place it gets constant siphon action.