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  • #16
    Re: need help!! why 14MPG

    the egr bypass is a good way to kill off ~2mpg....

    i got an MSD dis-4 on my car, not cheap but, my mileage went from 18 to 23 even with an egr bypass too...
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    • #17
      Re: need help!! why 14MPG

      Originally posted by Firebirdkid96 View Post
      i got an MSD dis-4 on my car, not cheap but, my mileage went from 18 to 23 even with an egr bypass too...
      ORLY?

      Lounge Moderator

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      • #18
        Re: need help!! why 14MPG

        Originally posted by Bonemaro View Post
        ORLY?
        haha, yes..

        the Dis-4 actually discharges multiple sparks below 3000 rpm to burn the fuel more efficiently.

        also does alot more, but i dont want to write a post that long lol
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        • #19
          Re: need help!! why 14MPG

          Originally posted by ThaDyce17 View Post
          Hey what is seafoam?
          :slap:
          my other truck has a 50 cal mounted on it

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          • #20
            Re: need help!! why 14MPG

            Originally posted by Firebirdkid96 View Post
            haha, yes..

            the Dis-4 actually discharges multiple sparks below 3000 rpm to burn the fuel more efficiently.

            also does alot more, but i dont want to write a post that long lol
            what is a dis-4?

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            • #21
              Re: need help!! why 14MPG

              well its not the fuel filter and i didnt want to pute any more monye into the car i just did the trans. i may just sell it sins my 83 supra with a carbed and camed ford 302 gets better MPG than the firebird.

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              • #22
                Re: need help!! why 14MPG

                well its not the fuel filter and i didn't want to put any more money into the car i just did the trans. i may just sell it since my 83 supra with a carbed and camed ford 302 gets better MPG than the firebird.


                why did it do this twice?!!

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                • #23
                  Re: need help!! why 14MPG

                  MSD Distributorless Ignition System - 4

                  Its a programmable high output aftermarket ignition module that will work on our cars.
                  Y87 Package
                  MANUAL CONVERTED, Pro 5.0 Shifter
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                  VANBIBBER APPROVED!
                  KRISTEN APPROVED!


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                  • #24
                    Re: need help!! why 14MPG

                    Originally posted by 95PFB View Post
                    well its not the fuel filter and i didn't want to put any more money into the car i just did the trans. i may just sell it since my 83 supra with a carbed and camed ford 302 gets better MPG than the firebird.


                    why did it do this twice?!!
                    pfft...thats the easy way out...I just did filter on my car and it seems to wind up a lot easier and smoother now....my filter was 12 years old...maybe it might make a difference for me, we will see soon enough...

                    2002 SOM Z28 Camaro - 12.9 @ 104 mph
                    1996 3800 Camaro - 13.43 @ 100.77 mph


                    Project Cars | How To Guides | Scratch Repair | Synthetic Oil

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                    • #25
                      Re: need help!! why 14MPG

                      Originally posted by 95PFB View Post
                      yes it is running fine, and no i don't think i did bad math i have checked it several times and it has bin this was for over 3 months now.
                      just to make sure, you're doing


                      miles taken on a trip / gallons needed to fill completely up

                      as your formula, and resetting the trip meter after every time?

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                      • #26
                        Re: need help!! why 14MPG

                        I get about 300+ city and 400+ miles highway to a tank. Usually between 22 and 27 mpg depending on how fast I go.

                        Oh yeah, as an aside, I tried doing the acetone-in-the-gas thing on a trip I took yesterday, it did not seem to make any difference. Actually my mileage on the way there was worse. I read that it doesn't do much for gas with 10% ethanol in it though.
                        Last edited by Rob Bell; 06-05-2008, 02:33 PM.
                        2002 Silver Firebird A4<br />T-Tops, Leather, Y87, W68, Chrome Wheels<br />Bone Stock

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                        • #27
                          Re: need help!! why 14MPG

                          wow... i get about 380 to a tank in town and about 430 on the interstate doing 85-90mph. i love my lil' bird! i cut the cat off mine, changed the fuel filter, plugs, wires, coils, and replaced the o2's and mine went from 24 avg. to about 28-29 avg. t5 with 3.23's here though. and i only rod the hell out of it when i go cruisin with my g/f on the weekends! i love this car

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                          • #28
                            Re: need help!! why 14MPG

                            where can i get this MSD Distributorless Ignition System - 4? i searched msd's website and could no find this part.

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                            • #29
                              Re: need help!! why 14MPG

                              i get horrible gas mileage too. i'm gonna replace the o2s and see what that does. i already have new oil, oil filter, fuel filter, spark plugs, spark plug wires.

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                              • #30
                                Re: need help!! why 14MPG

                                dont ever put acetone in your gas tank Thats Stupid That is a dumb myth

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