Originally Posted by
merle&louise
There is a guy in Lufkin, TX who drills out the return fuel line orfice and increases the size of the opening from .008 to .009
Supposedly, this increases the fuel economy by 1 to 1.5 mpg!
A fellow POGGER told me about this. He has done it on his coach and now gets the improved fuel economy.
I was going to do it but the tech couldn't reach my return fuel orfice.