driving a 01 gsr, getting bad gas mileage? i can get about 260miles tops(with alot of freeway) on a full tank. Never can pull 300miles out of a full tank. All sock cept header. exhaust, intake. help

 

bad o2?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CNSK &raquo;</TD></TR><TR><TD CLASS="quote">bad o2?</TD></TR></TABLE>

that's what i was thinkin'

 

How's your tire pressure?

 

its normal... im running 40 series?

 

try running sea foam (1/2 through brake booster line into intake manifold and 1/2 poured into gas tank)

 

Is there a check engine light on?

 

i only get 260 tops as well. but i thats cuz i took off my o2 sensor for my header.

 

umm jw but do u drive normally like low revs? or u always do high revs? cuz the revs really affect my gas milage for my car

 

generally i shift at about 3k everytime.. rarely i hit vtec all the time. but i was talkin to a friend , and i think maybe cuz i downshift? i downshift everyday i drive... all bad

 

what kind of header you running gsr_to_the_MAX?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Komptech &raquo;</TD></TR><TR><TD CLASS="quote">what kind of header you running gsr_to_the_MAX?</TD></TR></TABLE>

jdm itr 4-1

 

well have u tried driving on a whole tank withouth the downshifting? cuz if u downshift and let go of ur clutch = high revs which total = poor gas mileage. cuz i did it on a bmw and they have the guage that tells u how much gas u using, and its always at the lowest end when i downshift soooooooooooooooo ya

 

whens the last time you did a tune up ie ( maintence parts plugs wires , dist cap and rotor, valves adjusted etc)

 

well i just changed my oil about 100 miles ago. As far as complete tuneups, havent had once since we bought the car. We bought the car with 8k miles, now it has 17k miles. I have eliminated my downshifting completely, unless goin down hill. Maybe its time for a tune up or check up?

 

How much is average on a full tank?

ive been getting about 400km (240 miles) off 40 litres (full tank) when driving normally, and its been this way since i got the car in august.

 

thats pretty bad for a 4 cylinder.

my old toyota camry v6 family car got about the same mileage.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Damnit &raquo;</TD></TR><TR><TD CLASS="quote">well have u tried driving on a whole tank withouth the downshifting? cuz if u downshift and let go of ur clutch = high revs which total = poor gas mileage. </TD></TR></TABLE>

I believe your injectors shut off when you downshift to high revs (overun vacuum), the car knows you've downshifted and wouldn't want to waste gas either.

 

i get around 220-250 tops.
both city and highway driving daily.

 

Yes id have to say that im dissapointed with the mileage of b-series engines.

My old 2.2 litre mx6 turbo, fited with a t28 on 12psi got similar, if not better mileage

 

take out your spark plugs and look at them. It could also be you're driving habits... Stop and go much?

 

when i bought my GSR, i used to have to stretch to get 25mpg out of a tank. after changing fuel filter, running some redline fuel system cleaner, adjusting the valves, correcting the cam timing, and correcting the ignition timing, i'm up to 27.5 mpg on the last tank. i checked today for the first time since november and my tires were down to about 23psi (i really don't care about wear since they're junk tires). now i've got them all up around 40, so we'll see how much of a difference it makes. i haven't even changed cap, rotor, plugs, or wires yet.

get the car running right and your fuel economy should be

 

WHAT KIND OF GAS U RUNNING???? USE A HIGHER OCTANE IT MIGHT WORK...

 

i'm getting about 180-200 miles per tank. my '50 chevy gets better gas mileage! lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by greaseball &raquo;</TD></TR><TR><TD CLASS="quote">i'm getting about 180-200 miles per tank. my '50 chevy gets better gas mileage! lol</TD></TR></TABLE>

it could be cuz you have 199whp built motor?