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I've realized my e30 uses as much prem as a Z06 Vette

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    #16
    ah yes, the 325es, 30 mpg+ on the highway. i once got 43 mpg drafting a bus
    sigpic

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      #17
      Originally posted by Stanley Rockefeller View Post
      seriously...dont' bother. i've chased down the fuel consumption problem for years and several hundreds of dollars later I had a smooth running e30 that still consumed considerably more than my old stock 5 speed 325es

      I think a 3.25LSD in a 325i With an M20B25 would make a slight difference. prolly will accelerate a bit slower but will give better mileage.

      My 528e was amazing on gas. better than even my 1.6l old civic.
      Originally posted by e30e
      lose the old man bmwcca badge.

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        #18
        See my 325e was only about 25 to 27mpg mixed. Hmm.
        Originally posted by z31maniac
        I just hate everyone.

        No need for discretion.

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          #19
          Originally posted by bimmer_E30 View Post
          I think a 3.25LSD in a 325i With an M20B25 would make a slight difference. prolly will accelerate a bit slower but will give better mileage.

          My 528e was amazing on gas. better than even my 1.6l old civic.

          Yup, my 86es was far better than my stock 84 Rabbit with 1.8 and a 5 speed. Interesting how that all works out with the gearing and such. Back in HS we were all taught that the smaller the engine was (and the fewer cylinders it has) the better the FE would be. bloody LIARS!!!

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            #20
            I get around 29mpg in my bone stock M20B27 super eta running 87 regular.

            I get a consistent 11mpg in my chipped S38B36 e30 running 91 premium. Same as an SRT10 Viper.

            Meh.

            >> 1988 3.1 ITB E30 /// 2002 E46 M3 6MT / 2008 335xi 6MT / 1991 S38B36 E30 (sold)

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              #21
              on the track I figured it was 1 gal every 5 minutes at $10 per gallon, so basically a 30 minute session is $60 in fuel. I am sure at 10:5.1 I can run less than 100 octane, im just scarred to find out.
              Brian Jacobs

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                #22
                I get around 29-30 HW mpg matching correct r3vs. Rebuilding the eta m20 helps alot. I miss the hell out of my 91 honda hatchback, 43 mpg HW 32 if I drove like a bat out of hell.
                ~ Puch Cafe. ~ Do business? feedback ~ Check out my leather company ~

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                  #23
                  Originally posted by StereoInstaller1 View Post
                  if your car is a stock M20, it should run fine on regular...better, in fact.
                  ^This is very true. I remember I used to always fill all of my cars with premium-- at the time that was a, '87 325es, '97 M3, and an '04 325i. One day all of them were coincidentally empty, so I filled them all. With my wallet getting light, I decided to run regular in the eta. It actually ran a lot better. Makes sense though.

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                    #24
                    I get gas when I need it, fuck mileage. Dollar for dollar you are not going to find a more fun and exciting car.

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                      #25
                      Anyone who says that their car ran better with 87 octane than it did with 91 or 93 or whatever is falling victim to the placebo effect.

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                        #26
                        I get 400-500km to a tank on premium thats a m20b20 auto

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                          #27
                          Originally posted by dkbmxer002 View Post
                          it's not that your car gets shitty mileage... it's that the z06 get's good mileage... ls power ftw... my camaro with an auto used to get 30/31 mpg on the highway.... and i could drive it to the track and run high 10's that way.
                          lol. yeah no.
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                            #28
                            Originally posted by TwoJ's View Post
                            Anyone who says that their car ran better with 87 octane than it did with 91 or 93 or whatever is falling victim to the placebo effect.
                            i agree, the increased octane is just stoping knocking and allowing the computer to run at its peak (probably power over efficency). using the lower octane is just cheaper in the end, and may change the timing if the engine can even sense stuff like that.
                            sigpic
                            1987 - 325i Convertible Delphin Auto [SOLD], 325i Convertible Delphin Manual [SOLD]
                            1989 - 325i Convertible Bronzit m30b35 swapped [SCRAPPED], 325i Sedan Alpine Auto[DD]
                            1991 - 325i Coupe Laguna Manual [Project], 535i Sedan Alpine [SCRAPPED]

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                              #29
                              Originally posted by payney8 View Post
                              I get 400-500km to a tank on premium thats a m20b20 auto
                              whats pemium down there? in the US we have 87, 89, (sometimes 91), 93 at most stations.
                              sigpic
                              1987 - 325i Convertible Delphin Auto [SOLD], 325i Convertible Delphin Manual [SOLD]
                              1989 - 325i Convertible Bronzit m30b35 swapped [SCRAPPED], 325i Sedan Alpine Auto[DD]
                              1991 - 325i Coupe Laguna Manual [Project], 535i Sedan Alpine [SCRAPPED]

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                                #30
                                Originally posted by TwoJ's View Post
                                Anyone who says that their car ran better with 87 octane than it did with 91 or 93 or whatever is falling victim to the placebo effect.
                                No, the higher octane makes for lower combustion temps, not as efficient a fuel.
                                Originally posted by McGyver View Post
                                i agree, the increased octane is just stoping knocking and allowing the computer to run at its peak (probably power over efficency). using the lower octane is just cheaper in the end, and may change the timing if the engine can even sense stuff like that.
                                No, no knock sensor on an M20, so no "knock retard"

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