So today I filled up my 98 gs-r @ Chevron using 91 octane (reset trip meter to 0) and drove about 65 miles visiting a friend. The car sat for about 5 hours, then I drove it back to the same Chevron to fill up. The total trip is 105 miles and it took only 2.878 gallons. That means I got over 36 MPG on this trip. It was mostly freeway cruising at 75ish mph.
Only mod is AEM CAI, and 192,xxx miles. I LOVE MY TEGGY!

 

Wish I could say the same, 17-22 mpg in my GSR

 

well i gotta 98 GS-R with an Injen cold air.. 12 gallon tank with 280 miles to the tank.. 23 mpg but i still say i love my teggy!

 

Fill error could affect that number significantly. Especially since it was only a small amount of gasoline. You need to calculate that number over many tankfuls to establish an average and minimize the fill error effect.

I'm a proponent of statistics. LOL

 

also you let the car sit for 5 hours gas expands alot when it heats up.

 

yup...i just hit my all-time high of 27.7 miles per gallon at the shell...usually only get 22ish
and i love my teggy too/just hope the theives don't

 

i got 31 a few weeks ago. i think i hit redline a couple times on that tank too. its hard to keep out of it for me getting on and off the freeway and at lights.

 

I used to get 28 highway... Performed a tune up and I get on average about 31 highway. Completely stock

 

well...good for you

 

Lets state the basics for better gas milage-

New or Clean Air Filter, New Spark plugs, what else?

 

Dizzy... wires... fuel filter... Tire pressure... less weight... etc. etc.

 

Long highway trips doing about 70 most of way I get 34-37mpg. get around 23-27mpg around town. And yes I beat on it several times per tank. (use 93 oct)

air filter, fuel filter, plugs, wires, tire pressure, spraying some carb clean into TB will clean system out too (not while its running).

 

 

i just got 29mpg after a complete tune up on my 96 ls sedan

 

25-26 for me..99gsr..93oct. redline maybe twice a month.

 

how do you guys have gsr's and not redline them often? I dont know man, the pain of NOT doing it would make me go crazy.

I get about 26 mpg around town. and 33 on all highway trips cruising at 80-85. And Im no light foot.

 

When i first bought my GSR, i figured out the mileage on it bone stock. I was getting an avg of 26-27 city and 32-34 hwy. The funny thing is that after i turboed it, i got 23-24 city and 33-35 hwy. My lead foot lost some mileage in town, but i recovered some of it on the freeway which i thought was odd.

The next challenge is going to be getting good mileage with E85

 

1993 Del Sol Si Record 35.6mpg-nearly stock
1999 GSR Record 31.6mpg-mildly modified

 

would changing your o2 sensor help in improving gas mileage? if your o2 sensor was going bad.

 

Yes it would improve your mileage.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMEK9R &raquo;</TD></TR><TR><TD CLASS="quote">would changing your o2 sensor help in improving gas mileage? if your o2 sensor was going bad.</TD></TR></TABLE>

The 02 sensor is generally overlooked by most people. Since it relays the approx AFRs to the ECU and then adjusts fuel, its a pretty important piece to have. If yours is starting to go bad, i would get a new one and i'll bet you'll see an improvement in mileage.

 

Have any of you guys heard of a hybrid kit you can do to your car?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schister66 &raquo;</TD></TR><TR><TD CLASS="quote">When i first bought my GSR, i figured out the mileage on it bone stock. I was getting an avg of 26-27 city and 32-34 hwy. The funny thing is that after i turboed it, i got 23-24 city and 33-35 hwy. My lead foot lost some mileage in town, but i recovered some of it on the freeway which i thought was odd.

The next challenge is going to be getting good mileage with E85 </TD></TR></TABLE>

good luck with that! dont you have to run like 750cc or 1000cc injectors with e85? at least you get that higher octane.

 

where would you guys recommend getting replacement o2 sensors. I looked at oem ones and they're really expensive.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMEK9R &raquo;</TD></TR><TR><TD CLASS="quote">where would you guys recommend getting replacement o2 sensors. I looked at oem ones and they're really expensive. </TD></TR></TABLE>

get a denso or ngk replacement. think they're around 50-60 bucks