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    Summit Racing Muffler

    i just put one of the summit racing mufflers on my eta. and its has way too much interior drone, but perfect sound on the outside. i've never had a aftermarket muffler, but its pretty cool to be able to set car alarms off at the local mall parking lot.
    its got single offset 2.25 inlet and center 2.25 outlet.
    part number is SUM-638221


    what would be the best way to get rid of the annoying interior noise?
    -Paolo
    1986 325e RIP.
    1989 525i
    1986 635CSI

    #2
    sound insulation

    S54B32 swap in progress. Status: Getting There

    Comment


      #3
      Resonator
      Cornering is like bringing a woman to climax.
      -Jackie Stewart

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        #4
        does size matter when it comes to resonators?
        -Paolo
        1986 325e RIP.
        1989 525i
        1986 635CSI

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          #5
          Get one that's about 18in. from your local muffler shop, probably won't cost but about 20 bucks installed. That's what I did when I removed my cat. You can see it almost touching the ground in my sig.

          S54B32 swap in progress. Status: Getting There

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            #6
            but i need my cat because of california law. and is your resonator a glasspack? i heard that those wear out pretty quickly.
            -Paolo
            1986 325e RIP.
            1989 525i
            1986 635CSI

            Comment


              #7
              You don't have to take out your cat. And my car is really loud without it. Leave it, put on a resonator. It might be a glasspack, didn't take any note, but it's been on there a while with no problems.

              S54B32 swap in progress. Status: Getting There

              Comment


                #8
                is the stock resonator the little part thats after the flange? can i cut that out and put a resonator there?
                -Paolo
                1986 325e RIP.
                1989 525i
                1986 635CSI

                Comment


                  #9
                  Yep and yep.

                  S54B32 swap in progress. Status: Getting There

                  Comment


                    #10
                    Originally posted by PReta View Post
                    its pretty cool to be able to set car alarms off at the local mall parking lot.
                    ::facepalm::
                    Originally posted by Matt-B
                    hey does anyone know anyone who gets upset and makes electronics?

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                      #11
                      i just put on a 18 in magnaflow resonator right after the cat. and it definitely made it more quiet. the drone is cut down. but is it normal to smell something burning?
                      -Paolo
                      1986 325e RIP.
                      1989 525i
                      1986 635CSI

                      Comment


                        #12
                        dinamat the trunk
                        BUILD IT< BRAKE IT<FIX IT<RACE IT

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                          #13
                          Originally posted by PReta View Post
                          but is it normal to smell something burning?
                          i want to say no, but it could just be becuase its new. do you smell it in the car with windows up?
                          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.

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