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  1. 07-24-2007, 04:09 PM #1
    wonderboy
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    full exhaust going 2 devour my mpg?

    Just bought a 99 ta with full exhaust and a stealth cam..a4. Its replacing my wrecked 98 ws6 with a m6 that was completly stock which got 17mpg. Anyone know what kind of mpg to expect out of this? Im gone on vacation so wont be back home to my car for two weeks but im still curious...
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  2. 07-24-2007, 11:16 PM #2
    juiced99ws6
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    Mystic Teal
    99 Trans Am & 01 CBR 929

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    full exhaust will actually help your gas mileage, that particular cam might lose you a tiny bit of gas mileage and you will never get as good of gas mileage as an M6 however that 17mpg seems mighty low for being stock.. do you do a ton of stop and go type traffic?
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  3. 07-25-2007, 08:19 AM #3
    SSwt00SS
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    '18 CTS-V
    '13 ZL1

    the cam will hurt your MPG more than having a full exhaust will...

    come to think of it, this is the 1st thread i have ever seen where an F-body owner has ever been concered about MPG and mods...

    you dont own/drive these cars for fuel economy my friend, you drive then cause they kick ass!!!
    2018 CTS-V: °°668rwhp/658rwtq°°
    2013 ZL1: °°590rwhp/576rwtq°°
    "Never argue with an idiot. They drag you down to their level, then beat you with experience."
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  4. 07-26-2007, 09:19 PM #4
    JonB
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    Black
    2005 GTO

    Since my headers and tune I have actually picked up about 2-3mpg or the equivilant of an extra 60 miles to the tank. That is when I keep my foot off the gas. I'm pulling alittle over 22mpg around town. I'm not really sure how or why but I a very pleased with my mpg. For a 400hp motor to pull 22mpg you can't complain about that.
    05 PBM GTO
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    Sold 01 z28
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  5. 07-27-2007, 04:13 AM #5
    nhraformula
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    black
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    how much gas is used up depends on your foot.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25
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  6. 07-27-2007, 12:54 PM #6
    JOHN_DEERE_LS6
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    Black Raven/Ebony cowskin
    2005 Cadillac CTS-V

    my 99 t/a m6 get 25.2 mpg on the e-way at 80 mph and it has a full slp set up, long tube headers hi-flo cats and loud mouth.... guy i got it from sed he did 120 all the wya back from chicago with it and checked his milage and it was 32 mpg... jsut my situation and set up for peice of mind....
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  7. 07-28-2007, 05:52 PM #7
    wonderboy
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    Haha yea I really wanted to get another m6 but a month with no car was long enough. Im in a college town with tons of stop and go but i guess you have to pay to play..now im just worried about how long the stock tranny and rear end will last with the cam and all..any suggestions on how to put off paying for those for awhile..im going to be a poor poor college student
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  8. 07-28-2007, 06:21 PM #8
    shady milkman
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    Quote Originally Posted by nhraformula View Post
    how much gas is used up depends on your foot.
    x2
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