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What mods have improved your mpg?

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    What mods have improved your mpg?

    Maybe this thread will be a complete failure, but whatever. I, like many r3v members, am a broke college student who blows money on my cars instead of things that could probably be more useful. I'm fine with that. Anything that will help pay for itself in the long run though is definitely helpful though, or even anything that left your mpg unchanged. Have at it.
    What it feels like owning an e30:

    88 325 S50 swap in progress
    90 325ix


    #2
    the lead foot mod doesn't help
    Zinno '89 <24v swap in progress>

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      #3
      O2 Sensor, big time. Cat, good exhaust. Refurb'd AFM/MAF http://www.r3vlimited.com/board/show...83#post3152483

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        #4
        You have the most effect on your gas mileage.

        02 sensor since you can just buy one for <$40 / splice the wires and it has probably never been replaced on your car.

        instagram: @tonerrrr
        High resolution E30 Fuse Box 300dpi PNG

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          #5
          6 Speed

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            #6
            The diff and driver make a big difference. A taller diff can help your mileage decently. If it's your early 318i, a mid-low 3.XX diff could improve your mileage.
            The first car I ever rode in was an e30

            Originally posted by Cabriolet
            Wish you the best and hope you don't remember anything after 10pm.



            1992 Mauritiusblau Vert
            2011 Alpinweiss 335is coupe

            2002 540i/6 Black/Black
            2003 GSX-R 750 (RIP)

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              #7
              diff and turbo, believe it or not. Though the turbo also involved a wideband, which I think allows my tune to be a bit leaner at cruise than stock.

              Project M42 Turbo

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                #8
                Originally posted by Vivek View Post
                The diff and driver make a big difference. A taller diff can help your mileage decently. If it's your early 318i, a mid-low 3.XX diff could improve your mileage.
                I'm more interested in this for my IX right now actually since I'll be leaving for school in a month and probably taking it with me. As far as my 318i though, the diff is the least of that things problems right now

                I have heard people say they got better mpg with an m30 afm or miller maf and bigger injectors... anyone have before and after numbers or estimates on this?
                What it feels like owning an e30:

                88 325 S50 swap in progress
                90 325ix

                Comment


                  #9
                  weight reduction.
                  1986 Plymouth Horizon. Base.

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                    #10
                    Getting older mod, and moving to somewhere where I don't use freeways more than a few times a year mod.

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                      #11
                      Moar low and is lip helps
                      Originally posted by Sagaris
                      He wasn't around because he spent 7 years in jail for assault. There was a group of guys doing a 24v swap on someones car and one of the neighbor kids came over and starting too many questions. Tempers flared, sawzalls did work, and he cut the kids leg off. The victim later joined this forum under the name "5toes".

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                        #12
                        lots and lots of stickers makes any and all cars faster
                        1984 Eta
                        1987 Bagged
                        1988 I
                        1995 MX5
                        1998 C70T5M
                        2002 CL600

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                          #13
                          You want to spend $$$ so you can get a few MPGs more. How long will you need to drive to make the initial investment back and then start saving money?
                          My Seller/Buyer Feedback

                          Performance Aftermarket Parts & Accessories

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                            #14
                            Originally posted by Kevinxkrazy View Post
                            lots and lots of stickers makes any and all cars faster

                            The first post did not include the word "fast" anywhere within
                            sigpic
                            Originally posted by e30hijinks
                            I move faster than "the speed of light." I'm always connected to my Blackberry and am ready to purchase at a moment's notice. I do not play games

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                              #15
                              my bad
                              1984 Eta
                              1987 Bagged
                              1988 I
                              1995 MX5
                              1998 C70T5M
                              2002 CL600

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