i can hear a humming sound coming from the rear at idle. its not loud but doesnt take much listening to hear it. its my fuel pump right? it has 140k on it and assuming its the original and gettin tired so soon id like to replace it with one that gives a little more juice. i have a stock fuel system but id like to step up to like a 110 or higher for leavin room to grow without too much. what size would be ideal?

 

If the pump is starting to get noisey, it could be a sign that it is getting bad. Might want to replace it the next time the tank gets close to empty. Get a Walbro 255 and you will have all the fuel you will ever need.