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    E30 Running lean

    Ran My 325e on the dyno stock with a ristricted cat and got 98 HP 137 trq.
    Then i put my chip from BAV AUTO ran it agian and got 115 HP and 154 Trq.
    Now i Put ceramic coated headers and tryflow exhuast, both for a 325i and i ran it on the dyno today and got 115
    I should atleast be hitting 150HP.
    WTF.... she is running lean. Do any of you have an idea what to check for. I am replacing my fuel pressure regulator. probably getting it off a 911 or maybe from Bavarian auto.
    PLEASE HELP
    Attached Files
    Regards;

    Ali Ahmed Almutawakil, II
    E30 E46
    87 2oo2
    :hitler:

    #2
    Do you have an I head or am I missing something seein you rev till 7k with your E. A exhaust and headers will not get you 35hp what you were hoping to get. If the car is running lean then you might want to get bigger injectors and tune the car. Do you have a sheet of your a/f ratio or what makes you think the car is running lean ?

    One more thing I forgote to mention, you might just have a bad fuel pump or injectors. Check your fuel psi at idle and if that is low then replace the pump before you do anything else.
    Last edited by Coouuper S; 03-06-2008, 06:32 PM.

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      #3
      check the adjustment on your TPS

      you aren't going to hit anywhere near 150whp with an e - maybe at the crank.
      Build thread

      Bimmerlabs

      Comment


        #4
        Well We had another 325e hit 150 with an LSD and a chip with stock headers and exhaust.
        And thats whats killing me. i am not hitting seven K i am hitting 5500 i got that tack out of a 325i
        Regards;

        Ali Ahmed Almutawakil, II
        E30 E46
        87 2oo2
        :hitler:

        Comment


          #5
          No I dont have an I head thats my next thing. I am running 28psi at idel and thinking of getting a new fuel pressure regulator and BAV auto are telling me its 40 to 46 psi at idel. do you think thats a good investment. Do you have injecters that you are thinking of? Yes i have the sheet. so let me know what you got for me.
          Regards;

          Ali Ahmed Almutawakil, II
          E30 E46
          87 2oo2
          :hitler:

          Comment


            #6
            you expected a 35hp increase from headers and a muffler?
            Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

            Originally posted by TimKninja
            Im more afraid of this thread turning into one of those classic R3v moments, where Pizza gets delivered.

            Comment


              #7
              Originally posted by aalmutawakil View Post
              No I dont have an I head thats my next thing. I am running 28psi at idel and thinking of getting a new fuel pressure regulator and BAV auto are telling me its 40 to 46 psi at idel. do you think thats a good investment. Do you have injecters that you are thinking of? Yes i have the sheet. so let me know what you got for me.
              That is your main problem. I had the same problem with my car. If you are running that much lower at idle, you will also run much leaner at higher rpm's. It could be either your fuel pressure regulator or your fuel pump. My guess is thats its your fuel pump. Gluck.

              Comment


                #8
                Originally posted by Coouuper S View Post
                That is your main problem. I had the same problem with my car. If you are running that much lower at idle, you will also run much leaner at higher rpm's. It could be either your fuel pressure regulator or your fuel pump. My guess is thats its your fuel pump. Gluck.
                +1. 28psi is too low for an eta. You should have 37psi at idle.

                '88 325is
                VP UT of Austin Autoholics
                BMWCCA 380364

                Comment


                  #9
                  definitely low on pressure... I was just reading the Bentley on this stuff... fuel pressure should be up around where Bav Auto was telling you.

                  "BMW Style 32 Poster-Child"
                  HTTP://WWW.CLAVINZERO.COM/e30-5-lug
                  **(My Guide to E36 M3/Z3 1.9L 5-lug Swap)
                  **

                  Comment


                    #10
                    "Then i put my chip from BAV AUTO ran it agian and got 115 HP and 154 Trq."

                    Your chip also might be effecting your A/F, were you running lean before?

                    Comment


                      #11
                      Get it fixed before you hurt your motor. I would suggest not to drive the car having it that lean.

                      Comment


                        #12
                        btw our cars didn't come with these stock headers you speak of.

                        and it is idle not idel
                        sigpic

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