New fuel pump, better gas mileage
I just installed a new Airtex pump in my 1998 528i along with a filter. The original, at 165K miles is now a spare. The Airtex pump is a nice assembly and came with all the hose clamps and wiring. I also treated it to a new fuel filter.
The car now runs just as well as It did with the original pump but is getting a few miles better MPG.
I have no idea why this should be. Any thoughts?