handyandy

hi, i recently bought a 2001 mustang gt with around 90k miles, 5 speed manual, aftermarket intake and an aftermarket throttle body. I am have some gas mileage problems or what i think are problems when driving in the city, on the highway i get around 23-24 but in the city with modest driving i seem to be only getting around 8-9, no lie. Could the gas mileage problem be linked with the aftermarket componets? or do you think the oil on the air filter may have clogged the Mass air flow censor causing the ecu to add excess gas into the engine? I am not a very technical person so any imput would be great. Or maybe a chip would help? I really would like to get to the bottom of this so thank you for you imput and your time!

Flyingmau5

u see... people who own mustangs dont care too much about gas mileage... or at least I dont... especially when I drive with 4.10 gears ont he highway

Flyingmau5

but 8/9mpg ... thats a bit steep... erm even with my gears, i still get around 16-18 mpg city driving..

Brute03

i feel your pain man, right now i'm getting about 10-11 mpg...... but have a misfire problem that i'm trying to get to the bottom of. does your car idle smoothly, does it hesitate when you hit the gas?

handyandy

no it idles smooth and doesn't hesitate or anything like that. but i'll look into it more, thanks for the help.

saenzd

My car runs great but with all the mods i only get about 8-10 depending on how i drive so i know the feeling as well.

Flyingmau5

invest in a lighter right foot

monkeydude3

I have a piston ring problem and a heavy foot problem. When I am good I can get around 17... last fillup i got 15.5... not too bad considering it's ALL city stop and go CRAP driving with a/c on... lol


mine does close to 30 on the highway