thinking about swapping an st motor into my gt...., does better on gas Options

[Bigmeanbulldog55]

i filled up today and calculated my mileage.... 17.83mpg. yeah, stupid dealership. totally calculated it wrong. they said our cars are only supposed to do 25mpg, and mine was doing approximately 22... i think not!

I get way better milage out of my 5sfe. And I'm slitely modded. Seriously, 25 at the least here. And I don't baby the car either, it's driven fairly hard sometimes.

[Negative]

i filled up today and calculated my mileage.... 17.83mpg. yeah, stupid dealership. totally calculated it wrong. they said our cars are only supposed to do 25mpg, and mine was doing approximately 22... i think not!

Something is def wrong then. I get 300m to a tank (22mpg) in Houston traffick. Houston has one of the worst traffick ratings in the country. Fully 50% or more of my driving time is sitting in traffick not moving. I'd get a second opinion about your fuel system.
Maybe hook up a good analog A/F meter and see if you are constantly running rich. Also what RPM do you idle at? That can have a huge effect on gas mileage.

[GeEkBoY]

Again, I will add to what has been said, something is wrong with your car. Without seeing the car, best guess would be the O2 sensor as many have mentioned. others are sparkplugs, wires, distributor, coil, that anchor dragging behind your car.

I get up to 675 km (420 miles) highway, 550 km (342 miles) Toronto traffic per tank and I have over 265,000 km on the car. The lowest I have remembered is 500 km (311 miles) and that was city traffic in the winter when the thermostat was gone and the car would not fully warm up.

and by the way, they did sell STs in Canada but they sold poorly and were only offered for the first couple years.

[Clyde]

If i were you, id just buy a ****ty small car. its better for ST's to stay ST's or move up to GT's than for GT's to move down to ST level. You'll wish you had a GT later on in the track.

Better get ur engine tuned, cos mines ok.

[blu94gt]

how exactly are you calculating your gas mileage? How many miles do you put on a tank of gas? Maybe there's an error there

[95gtschick]

okay well here, someone else calculate it for me.

191.8 miles, to 48.89 litres (you'll have to calculate it into gallons)

[elvasoshexai]

did you try resetting ur ECU? i heard that helps...

wow.. with those #s i got 14.8mpg... or am i calculating it wrong now? hah

my 5sfe camry gets about... 375km city + minor (5-10min) highway driving in the suburbs of toronto.. and i thought that was bad

This post has been edited by elvasoshexai: Feb 9, 2006 - 11:10 AM

[Alchemist_57]

I've kindof been having the same problem. My mileage was okay at first, but after i did a tune up, it got worse. I replaced both O2 sensors, plugs, plug wires, fuel filter, air filter, oil & filter.

I usually run premium, and sometimes mid-grade, fuel in it. I don't understand how my mileage got worse.

How would you go about resetting the ECU? And what exactly does that do/affect? Any help is appreciated.

[elvasoshexai]

I've kindof been having the same problem. My mileage was okay at first, but after i did a tune up, it got worse. I replaced both O2 sensors, plugs, plug wires, fuel filter, air filter, oil & filter.

I usually run premium, and sometimes mid-grade, fuel in it. I don't understand how my mileage got worse.

How would you go about resetting the ECU? And what exactly does that do/affect? Any help is appreciated.

resetting the ECU is supposed to allow the computer to "re-learn" the way you drive and so it can i guess "conform" to the way you drive possibly increasing your gas mileage. So if you (or the previous owner) used to drive like an ass which caused crap gas mileage... resetting the ECU then driving conservatively for about a week may allow you to see better gas mileage

http://www.6gc.net/index.php?action=howto&itu=33

hm.. maybe i should take my own advice and try this too

This post has been edited by elvasoshexai: Feb 9, 2006 - 7:47 PM