how much mpg do you guys get?

[tehstocker99]

330 miles on a tank....so yeah..figure it out

[sydewayz]

ok bad 02 sensor, fixed but i STILL cant break 25 mpg....

i think its all tuning left...but i have no tuning tools....

-so far i see theres the distributor timing thing
-and the o2 senor rich/lean stuff...
what else can i tune.....also, do i need to do a compression test or something? dammit is ANYONE in the gainesville area? i need help....

[FE3-323]

sydewayz put your location in your profile!

[sydewayz]

ok so i ran the ecu check a second time, and low and behold the o2 sensor code is gone, but looky looky here comes a code 41 outta NOWHERE.....

bad solenoid valve? wtf is a solenoid valve? would that negatively effect my mpg, cuz if not its staying broken...tired of piling money into fixing problems lol....

then again, thats what happens at 175k.

[elscotto80]

25 around town, up to 38 on the highway. boosted BP with stock GTX goodies.

[neuspeedescort]

i hit 30 mpg on the trip to canada for mazdamadness this weekend.


NEUMAN

[sydewayz]

wtf is wrong with my car? can timing alone cost you 10mpg?

[FE3-323]

yes, change the fuel filter?

[Lex]

hehe I got 22MPG but that is a lot of boosting at 17psi to redline and running 10-11 A/Fs on 460ccs. Generally I see about 26MPG boosted

[FE3-323]

eats the wallet!

[sydewayz]

ive done:

fuel filter
air filter
plugs
wires
o2 sensor
injectors - cleaned
oil change
ditributor cap and rotor

my ecu is pulling a code 34 and 41..... my isc valve and my vics solenoid.....
idle only goes up 300rpm, not gonna do me outta 10mpg. the VICS only kicks in a WOT @5000rpm right? So i dont need that either.....for now cuz i never break 4000rpm.


so WTF is left? Timing? How much work does that entail? (This post has three questions. -thanks)

[FE3-323]

if the VICS solenoid is broken it could result in the butterfly's being open when they shouldn't be which will kill MPG

[neuspeedescort]

the reason your gettign such poor mileage is due to the fact you never rev it up. you probly have a nice carbon build up in your motor. 4k is where vics kicks in.


NEUMAN

[FE3-323]

Wait!!! WAY INCORRECT NEUMAN..... VICS doesn't click till ~5200

[FazdaBoy4ever]

with my turbo lxe i saw 28 city mpg regularly, when i was predominantly highway i would see 30- 32 mpg... i have not done a strictly highway tank or strictly tank... so the hightway could be better and the city could be worse... but that was my average.

in my b8 autotragic protege i get no less than 25 generally 25-28mpg