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  1. 06-12-2009, 03:06 AM #1
    jmdgto
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    torrid red
    2005 gto

    402-408 h/c/i gas mileage ?

    what kind of gas mileage is everyone getting with a 402-408 h/c/i na builds?
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  2. 06-12-2009, 03:07 AM #2
    JoshieDoom
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    I think Luos is getting a lil over 20 on the highway with Slowass.

    A4 or m6?
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  3. 06-12-2009, 04:33 AM #3
    Sarge
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    Retired Outlaw Sum Bitch

    25mpg cruising at 70mph @1900 rpm.
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  4. 06-12-2009, 10:21 AM #4
    mrr23
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    black
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    in town about 15mpg.
    Cold Air Intake, Muffler Delete, Vinci High Performance Dual Valve Springs, Hardened Pushrods, Yella Terra 1.85 Rockers, Some Hydropdipped Stuff, Strut Tower Brace, Some SS Badges, boost/vacuum gauge, fuel pressure gauge, some checkered stripes, drilled/slotted rotors, ZL1addons Stealth wickerbill, Ruxifey LED side markers
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  5. 06-12-2009, 02:27 PM #5
    jmdgto
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    torrid red
    2005 gto

    m6. they told me it was getting 17 mpg hwy.
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  6. 06-12-2009, 04:26 PM #6
    Hi-Po
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    Quote Originally Posted by Sarge View Post
    25mpg cruising at 70mph @1900 rpm.
    What about in town?
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  7. 06-12-2009, 04:48 PM #7
    mark21742
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    Quote Originally Posted by Sarge View Post
    25mpg cruising at 70mph @1900 rpm.
    that's not what your getting in your goat is it?
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  8. 06-12-2009, 08:30 PM #8
    Mr. Luos
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    Quote Originally Posted by Sarge View Post
    25mpg cruising at 70mph @1900 rpm.
    I don't believe this for a second.
    Unless your 4th gear (you have automatic right?) is .50 rather than the typical .70.
    Even sporting a 3.42 axle ratio, you should be right around 2100RPM at 70MPH.
    Hell, in stock form that car shouldn't have gotten 25MPG highway with the auto.



    Oh, and my 248/254 cammed 402 gets 20MPG on the highway. M6 with 4.11's.
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  9. 06-21-2009, 12:35 PM #9
    WS6ICK2K
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    I think it all depends on the size cam you decide on... neways goodluck with your build let us kno the results.
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  10. 06-22-2009, 03:44 PM #10
    jmdgto
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    torrid red
    2005 gto

    got 26 mpg at 70 mph through a m6. cam 247/251 623/623 . not bad . in town 8 mpg .lol
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  11. 06-22-2009, 07:49 PM #11
    Mr. Luos
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    Quote Originally Posted by jmdgto View Post
    got 26 mpg at 70 mph through a m6. cam 247/251 623/623 . not bad . in town 8 mpg .lol
    Gears?
    Heads?
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  12. 06-23-2009, 03:51 AM #12
    jmdgto
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    torrid red
    2005 gto

    heads are afr 225 milled to 65cc. stock gto gears for a m6. 3.42 i think. car runs 1800 rpm at 70 mph.
    Last edited by jmdgto; 06-23-2009 at 03:53 AM.
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  13. 06-23-2009, 05:30 AM #13
    allbaugh_04
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    Quote Originally Posted by Mr. Luos View Post

    Hell, in stock form that car shouldn't have gotten 25MPG highway with the auto.
    I've gotten 25 easily many times in my A4 and best of 27 before the stall.

    Oh, oops, this is for 402/408s my bad
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  14. 06-26-2009, 01:54 PM #14
    Dr.Crash
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    mixed driving i get about 16mpg. freeway is about 22mpg


    i've got a semi heavy foot
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  15. 06-26-2009, 02:05 PM #15
    Hi-Po
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    Quote Originally Posted by Dr.Crash View Post
    mixed driving i get about 16mpg. freeway is about 22mpg


    i've got a semi heavy foot
    No, that sounds about right

    I just figured my mileage out. 100% street driving, no expressway. 12.2 MPG.

    Now, thats driving it hard.
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  16. 06-26-2009, 02:20 PM #16
    Dr.Crash
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    Quote Originally Posted by Hi-Po View Post
    No, that sounds about right

    I just figured my mileage out. 100% street driving, no expressway. 12.2 MPG.

    Now, thats driving it hard.
    I got 12 once with 100% street driving i dont think i ever had my foot off the gas
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  17. 06-26-2009, 02:46 PM #17
    Hi-Po
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    Quote Originally Posted by Dr.Crash View Post
    I got 12 once with 100% street driving i dont think i ever had my foot off the gas
    Thats not un-usual for me. I blame it on.... I was tuning.
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