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Gas milage

This is a discussion on Gas milage within the Firebird / WS6 forums, part of the Vehicle Specific category; I have a 2000 ws6 trans am, and the gas milage is only around low 20's. It has 3 inch ...

  1. #1
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    1998 firebird formula ws6

    Gas milage

    I have a 2000 ws6 trans am, and the gas milage is only around low 20's. It has 3 inch exhaust and a slp lid. But i have another 98 ws6 and it gets high 20's. The car runs excellent, nothing wrong at all with runing or driving. Has 65,000 miles. Any idea's?

  2. #2
    Member NorthwoodDavid's Avatar
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    1999 Trans-Am

    What mods does the 98 have?

    same transmission on both?

    Rear gears, any different?

  3. #3
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    1998 firebird formula ws6

    the 98 stock, both have 6-speeds, and the gears are the same

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    1998 firebird formula ws6

    stock gears anyway

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    Member NorthwoodDavid's Avatar
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    Black
    1999 Trans-Am

    tire pressure is the only thing can think of...air filter, tune up mabey

    idk im just pissing in the dark lol

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    1998 firebird formula ws6

    thank you.

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    Member NorthwoodDavid's Avatar
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    1999 Trans-Am

    and when you say 3" exhaust, is that headers, or just y, catback?

  8. #8
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    y catback, i have'nt put the exhaust fully out the back yet, i bought the car about 3 weeks ago. and the exhaust end up rusted out at the clamps and i had to cut it off at the Y

  9. #9
    Member NorthwoodDavid's Avatar
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    gotcha, Wow you have 2 ws6s at 29 lol i just processed that.

    ok i gave my opinion, so ill stop posting on your thread, i feel like once i post in a thread nobody post after that. like i kill it or something lol

    so hope you get others to chime in, theres great guys hear with tons of info

  10. #10
    Member NorthwoodDavid's Avatar
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    crap your not 29 you have 29 post lol

    but still

  11. #11
    Member screaminbird's Avatar
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    ur complaining about 20mpg dude i get 12

  12. #12
    nut butter Poppn's Avatar
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    1999 Camaro SS

    is this street, highway, or combined?


    100% street I usually do 16mpg.

    50/50 I usually do about 20mpg

  13. #13
    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    i would say a full tune up and if you want more then go get a tune.

    Plus you could try the ole tcw3 oil trick..

  14. #14
    Member ronnie tadlock's Avatar
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    2001 Trans Am WS-6

    My driving is more around town and rural roads than highway and I average around 18 mpg. If I get some highway time it goes 22 or better. Mine is a stock '01 6-speed. As bad as that may sound, it's still several mpg better than my 4x4 Durango with a 318 auto and a lot more fun!!

  15. #15
    LS1 chosen son lemons12's Avatar
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    Quote Originally Posted by screaminbird View Post
    ur complaining about 20mpg dude i get 12
    your complaining about 12mpg dude i get 7...

  16. #16
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    Red
    1998 WS6 Trans Am

    I rarely get below 20-22 unless I don't drive on interstate at all and have the pedal buried every time the light turns green or just wanna smash it every 5 minutes or so. I have noticed that I get a lot better mpg with premium but that's always the case for people that have cars that "recommend" premium.
    I dont think I run through a tank of gas without having some fun with it to be honest. Oh yeah, almost forgot, I have 14x,xxx miles on my car. Yet, still get great mpg.

  17. #17
    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    <--- best I had was 25.5. 98s FTW!

  18. #18
    Member screaminbird's Avatar
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    Quote Originally Posted by lemons12 View Post
    your complaining about 12mpg dude i get 7...


    Hey im not complaining its a trans am its worth EVERY penny.

  19. #19
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    PEWTER
    2001 TRANS AM WS6

    Fuel filter

  20. #20
    nut butter Poppn's Avatar
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    Quote Originally Posted by DIRTY JERZY View Post
    Fuel filter


    I changed my fuel filter at 55,xxx and it didn't change my mpg a bit...


    but that's just my experience, it was easy to do and cheap insurance anyway

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