So I've realized lately that now i'm only averaging 16-17 mpg. I used to get about 20-22 mpg, this is city driving btw (my car has always averaged about 20-22, and thats with and without the supercharger). the only difference that this has occured over has been over the addition of my header, high flow cat, and full exhaust, which was done at the end of december. its only 2 1/4 though, conservative. Could i be losing about 5 mpg just cuz of the new exhaust? i have no codes and use premium.
and no i dont have a lead foot
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- Sold my beloved J in April 2010 -
My mileage actually improved with the addition of the catback, on the highway that is. In the city it got worse, but likely due to my change in driving style.
15.3 @ 89.97mph, 14's on the way?
You could be losing mileage simply due to the weather. Especially in city driving. Until the engine heats up, the oil is thicker among other things and efficiency is out the window. If you have an oil pressure gauge, you can see how much of a difference the temperature makes.
An exhaust should actually help your mileage since the engine doesn't have to work as hard to push out the exhaust gases.
I track my mileage religiously and am putting a full exhaust in next week. It will be interesting to see what effect it has.
i found when i got my zaust in my mileage in town dropped abit too. till i stopped gettin on it to hear the zaust growl!!!
my milage is still above 20
berto its called take your foot off the gas pedal you lead foot!
And don't deny being a lead foot either lol
Car is for Sale!Supercharger kit is for sale!
alright, so now i seriously need some possible solutions to this problem.
check plugs?
gas leak somewhere?
stuck injector ?
o2 sensor not working right?
only thing is i dont have an CEL's or anything.
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- Sold my beloved J in April 2010 -
or whats the chance that the stock FPR is messed up?
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- Sold my beloved J in April 2010 -
stock FPR messing up is a definate reality. highly doubtfull though.
novaracer wrote:use regular
I believe he's supercharged, that's why he's not using regular.
www.kronosperformance.com / 732-742-8837
It could may very well be your driving.
Being that the mods you did pushed your power curve upwards, I am willing to bet that you are pressing the pedal more to achieve the low-end performance of before.
What header did you put in?
Or... .
You are not doing the math right!
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-----The orginal Mr.Goodwrench on the JBO since 11/99-----
