E30 straight pipes question

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  • PeterCip
    E30 Addict
    • Oct 2003
    • 402

    #16
    straight pipes sound horrible on an e30.. mad raspy
    ask me how i know

    Comment

    • Rob
      Moderator
      • Oct 2003
      • 8166

      #17
      All the E30s I've heard with straight pipes have sounded great...as long as its a 6 cylinder. 4 cylinders sound horrible with too much exhaust noise...

      Straight pipes are much too loud for a street car though. A decent hi flow cat/universal muffler will sound just as good, not wreck your ears, and wont break the bank.
      BEERTECH

      Comment

      • Graham325
        Grease Monkey
        • Sep 2004
        • 399

        #18
        I was planning on not putting a cat on, do I need to? Graham

        Comment

        • Rob
          Moderator
          • Oct 2003
          • 8166

          #19
          no reason not to.
          BEERTECH

          Comment

          • finch
            Wrencher
            • Oct 2004
            • 279

            #20
            Originally posted by Graham325
            gotta say, whats with the Australians, you guys are the only ones answering.
            huh.. is that bad? 8)

            Comment

            • Graham325
              Grease Monkey
              • Sep 2004
              • 399

              #21
              cost, arent the like $100+???

              Comment

              • Rob
                Moderator
                • Oct 2003
                • 8166

                #22
                cats? no you can get them for like $65 if you shop around.
                BEERTECH

                Comment

                • rs4pro3
                  R3V Elite
                  • Oct 2003
                  • 5808

                  #23
                  ya, I got my 1 3/4" cat's off ebay brand new for $60 shipped each. Then had the muffler shop weld them in. After finishing he asked where I got them as they sell the same thing for $250 for a dual in dual out Cat. (I had them weld in a cat on each of the 2 pipes)
                  85 325e 2.7 ITB'd stroker

                  Comment

                  • Graham325
                    Grease Monkey
                    • Sep 2004
                    • 399

                    #24
                    would it be ok to run without one? for the sake of a super cheap short term exhaust? I am trying to scrounge up some money to buy a e36, and dont want to drop a ton on this exhaust which I plan on replacing after the s50

                    Comment

                    • Axxe
                      No R3VLimiter
                      • Aug 2004
                      • 3355

                      #25
                      I got a noise violation ticket for driving with just the headers-cat section of the exhaust. The cop said he was a block away and followed his ears. I was lugging it too, i just needed to get some new hangers. Sounded awesome WOT though :D


                      Keep it slideways!!

                      Comment

                      • tonytony
                        Knee deep in poopie
                        • Jan 2004
                        • 3498

                        #26
                        Originally posted by PeterCip
                        straight pipes sound horrible on an e30.. mad raspy
                        ask me how i know
                        how do you know? haha :P

                        I think strait piping isn't bad, but when peopel say straight pipe do they mean no muffler at all or just no cat?

                        Comment

                        • nando
                          Moderator
                          • Nov 2003
                          • 34827

                          #27
                          anyone know of a good high-flow/lightweight cat? mine is due for replacement, my downpipes are cracked before the O2 sensor and my exhaust sheilding is falling apart. going to have something custom made to fit up with my headers.
                          Build thread

                          Bimmerlabs

                          Comment

                          • MattE30
                            E30 Mastermind
                            • Oct 2003
                            • 1520

                            #28
                            I have heard good things about Catco.

                            97 Cosmos M3

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