Originally posted by Y2KSVT:
... The only thing I've changed is the throttle body. It's the same size, only this one doesn't have any air leaks. ...
Air leaks = P0171 and P0174 = engine in limp mode = bad gas mileage.
But different brands of gasoline have different injector cleaners, additives, etc. in them. So it is possible that your 3L performs better with Shell brand gasoline.
Last edited by Tony2005; 06/08/06 08:41 PM.
