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    #1

    I'm in a flap

    Genuine question here,

    Now i have spent the morning going through all the flap releated posts on here and would like to know if its ok to run without it?

    last night i noticed the car was a little quiet when giving it some hoof so once home got the missus to jump in and give it a good old rev up to 5K.

    No flap operation seen with sport on or off.

    Now the mechanic that done my Insp II the other week commented that there was a fault code there but it was operating fine at the time of the service. He also said (as most do) if it stops working again just whip it off.

    So if i remove it will the engine blow it's headgasket into 1000's of bits, spit the crankshaft out through the watter pump and smash the SMG box to bits or...... will it just be fine as long as i dont drive through any swollen rivers?

    opinions please :thumbs:
    Tags: None
    #2
    Paul, I know Rob runs without his and he does a lot of miles without issues, I'm sure other's do too, I think it will be fine mate

    Comment

      #3
      If still under warranty get BMW to repair the actuator motor. Then remove it! :thumbs:

      Comment

        #4
        Yeah thats what i thought Dan, can't see any difference running it without one other than the noise as the engine will only suck as much air as it needs.

        Rob,
        No warranty on the car, it's +60K now so have been to scared to price it up this year :bigcry: :bigcry: :bigcry: :hahaha:

        Flap will be off within the hour :beer:

        Comment

          #5
          Mine has been off for almost 2 years with no problem. Only side affect is that air filter element gets dirtier a little quicker with the flap removed.

          Comment

            #6
            Just a quick one, when does the flap usually open, I thought it was above 6.2k normally and from 3k upwards in Sport mode?

            Comment

              #7
              No difference without it. I ran without for about 100 years. Infact now you've mentioned it, and I've sold the car, I realise the flap is still in the garage on a shelf :hahaha:

              There used to be some nonsense going around that without it the engine would be "getting too much air" :hahaha:

              Comment

                #8
                Originally posted by SpineOnABap View Post
                and I've sold the car, I realise the flap is still in the garage on a shelf :hahaha:

                :hahaha:

                when!?!

                Comment

                  #9
                  Originally posted by glendog74 View Post
                  Mine has been off for almost 2 years with no problem. Only side affect is that air filter element gets dirtier a little quicker with the flap removed.
                  Thought that might be the case so an air filter at the same time as the oil change between service intervals is on the cards. :smokin:


                  Originally posted by Dan View Post
                  Just a quick one, when does the flap usually open, I thought it was above 6.2k normally and from 3k upwards in Sport mode?
                  Dan, mechanic at BMW told me anything above 4500rpm and it should open. I took it he was meaning with sport on.


                  Originally posted by SpineOnABap View Post
                  There used to be some nonsense going around that without it the engine would be "getting too much air" :hahaha:
                  :hahaha: :hahaha: :hahaha: hmmmmm :whistle: need a bigger hole in the bumper for that i'm affraid :hahaha:

                  Comment

                    #10
                    Originally posted by rstoughy View Post
                    Thought that might be the case so an air filter at the same time as the oil change between service intervals is on the cards. :smokin:




                    Dan, mechanic at BMW told me anything above 4500rpm and it should open. I took it he was meaning with sport on.




                    :hahaha: :hahaha: :hahaha: hmmmmm :whistle: need a bigger hole in the bumper for that i'm affraid :hahaha:
                    Am I missing something or is there actually any point in running the flap? What's it's advantage when it's working?

                    Comment

                      #11
                      Originally posted by Dan View Post
                      Am I missing something or is there actually any point in running the flap? What's it's advantage when it's working?
                      The flap was primarily fitted to satisfy noise regs. Has no effect on outright power.

                      Comment

                        #12
                        Originally posted by Dan View Post
                        Am I missing something or is there actually any point in running the flap? What's it's advantage when it's working?
                        As far as we all know it was put in for noise reasons. Original prototype CSL didnt have one. It just limits air flow at lower revs and reduces therefore BHP 0-30 bhp over the range it doesnt open compared when sport is pressed

                        Comment

                          #13
                          Originally posted by glendog74 View Post
                          Has no effect on outright power.

                          a faulty flap reduces power for part of the range:thumbs:

                          Comment

                            #14
                            Originally posted by glendog74 View Post
                            The flap was primarily fitted to satisfy noise regs. Has no effect on outright power.
                            So no increase in power at all when open then?

                            Comment

                              #15
                              :banghead:

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