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    Air Box Drilling?

    Ive heard if you drill some holes in your airbox you can get minor improvements? Is this true? If so, where do you drill? How many holes? How big? Anyone with ideas please let me know. Plus any pics? Thanks guys. _Travis

    #2
    NM guys, i used the search tool and found exactly what i was looking for. But if anyone has pics of this cheap mod, please post. thanks

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      #3
      Drill the holes in the side facing away from the motor, its a useless mod for performance, however it sounds a hell of a lot better, and it beats those fucking cold air kits.

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        #4
        Cool man. Now i just need a pics or two to look at. I dont know how big of a hole to drill and how many to drill ya know. Thanks again man, and cant wait to hear the new sound it makes.

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          #5
          They're called "speed holes"

          They make you go faster.

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            #6
            Any downsides to this?

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              #7
              Originally posted by Eurospec
              Any downsides to this?
              none that i'v noticed and if got the shit drilled out of mine. like 10 2 inch holes or so...

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                #8
                if youre gonna do it, dont drill behind the filter.
                : : 1984 318i : : PNW E30 Crew : : Sold!!
                Now becoming the R3vlimited Pro3 car
                http://www.r3vlimited.com/board/showthread.php?t=93780

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                  #9
                  Originally posted by chuckybob
                  if youre gonna do it, dont drill behind the filter.
                  what do you mean, like the top section of the box? why would anyone do that...?

                  it sounds al ittle throatier and you probably loose 1 hp...

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                    #10

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                      #11
                      Depending on your car's configuration, your engine will sound louder than the exhaust or will now be in sync (somewhat) with the exhaust.

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                        #12
                        Originally posted by chuckybob
                        if youre gonna do it, dont drill behind the filter.
                        I really hope these guys are smarter than that...
                        BimmerHeads
                        Classic BMW Specialists
                        Santa Clarita, CA

                        www.BimmerHeads.com

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                          #13
                          and you're motor will probably have a nasty lean spike. Mine did on the dyno.
                          BEERTECH

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                            #14
                            Originally posted by MR 325
                            I really hope these guys are smarter than that...
                            Really?!????

                            Oh shit...I drilled holes in my whole box... OMG! :crazy:






                            Yea...I hope so too, Matt. lol
                            - Sean Hayes

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                              #15
                              Originally posted by Eurospec
                              Any downsides to this?
                              you lose horsepower

                              you lose mpg




                              but it does sound good for free

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