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  • #16
    Re: Finally hit 30!

    dang my 22-23 mpg suck then

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    • #17
      Semi-old thread, but I got a best of 27mpg averaging 80-85mph on a trip to Tulsa back when I had 3.08s. I had headers, CAI, and a whisper lid back then.

      Not sure what I would get now. I haven't taken it on a road trip since then.
      '99 Camaro
      '04 Saab 9-3 Aero
      '90 Audi Coupe Quattro

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      • #18
        Re: Finally hit 30!

        Originally posted by cam98aro View Post
        neutral towards stops actually uses more gas than coasting in gear
        How does that make sense? If your at idle your using less gas than at 2-3krpm. I would like an explanation.

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        • #19
          Re: Finally hit 30!

          Originally posted by KJZ28 View Post
          How does that make sense? If your at idle your using less gas than at 2-3krpm. I would like an explanation.
          the car shuts the injectors off when you are engine braking.

          you are basically getting unlimited mpg at that point.

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          • #20
            Re: Finally hit 30!

            Originally posted by pace2006 View Post
            Semi-old thread,
            Heck, on this site a one-month old thread is nearly new :D

            To the original topic; I've seen 30 mpg a few times, always on long highway trips when the average speed is 65-70. It's not uncommon to see 26-28 in mixed driving, but when I was using the car to commute from Fredericksburg to DC, in frequent bumper-to-bumper traffic, I was only getting 23-24.

            Oh, and fwiw my car is an '02 5-speed (3.23 gears), w/intake, exhaust, and PCMforless tune.

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            • #21
              Re: Finally hit 30!

              Originally posted by cam98aro View Post
              the car shuts the injectors off when you are engine braking.

              you are basically getting unlimited mpg at that point.
              If the injectors were off, wouldn't the engine turn off because it is no longer getting fuel?

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              • #22
                Re: Finally hit 30!

                Originally posted by KJZ28 View Post
                If the injectors were off, wouldn't the engine turn off because it is no longer getting fuel?
                that is correct. but since you are still in gear the engine is still spinning.

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                • #23
                  Re: Finally hit 30!

                  Wow I never knew this, that is crazy.

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                  • #24
                    Re: Finally hit 30!

                    Originally posted by KJZ28 View Post
                    Wow I never knew this, that is crazy.
                    Yeah, I have heard about it for a long time, but I never really believed it, after getting all of my scanners when i engine brake the mpgs go up to 9999.

                    I may be mistaken, but automatics do this also, I know my girlfriends car will go up to 150+ average mpg after resetting it and moving without hitting the gas

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