Help,
My mileage is terrible! I have a 2000 4.7 5spd with a quick -D 65mm throttle
body and intake and a flowmaster cat back exhaust. I currently get about 9
to 10 mpg in the city. Strangely though, if I am just cruising along with a
light throttle (highway or surface streets) then mileage is respectable but a
s soon as my foot gets into it a bit there it goes - down the tubes. Does
this sound like a bad MAP sensor? A malfunctioning mileage calculator
(overhead console)? Any thoughts?
BTW, I just performed an off the manifold thorough TB cleaning. This seems
to have helped the idle somewhat but I doubt it did much for mileage.
Thanks
Andrew
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