Stromung cat back Group Purchase

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  • eco325iX
    Advanced Member
    • Apr 2006
    • 107

    #706
    Gotcha, good to know, maybe I'll wait for the next group purchase. I have some other projects that need tending to, plus I need the front exhaust section as well. The accordion/flex pipe near the manifolds has a hole in it that the PO tried to weld shut, but failed, and the cat is original and I'm sure useless at this point.

    Comment

    • Stan
      Mod Crazy
      • Jul 2019
      • 770

      #707
      Originally posted by eco325iX
      Damn I missed this, how often does Stromung produce a batch of these? My vert is in need of an entire new exhaust system and this looks like excellent craftsmanship and quality! Hopefully I can jump on the next batch.
      I think you can still get in on it. Just follow the instructions, order on the Stromung website and note R3vLimited Group Purchase.

      Comment

      • eco325iX
        Advanced Member
        • Apr 2006
        • 107

        #708
        Thanks Stan, I'll look into it.

        One more thing, do you happen to know if the Stromung is a simple bolt-up application like the original exhaust? The reason I ask is that I want to replace my front section and would prefer to also replace the original cast manifolds with some stainless headers, as I have future plans for my M20?

        Comment

        • Zzyzx85
          Advanced Member
          • May 2012
          • 128

          #709
          Originally posted by eco325iX
          Thanks Stan, I'll look into it.

          One more thing, do you happen to know if the Stromung is a simple bolt-up application like the original exhaust? The reason I ask is that I want to replace my front section and would prefer to also replace the original cast manifolds with some stainless headers, as I have future plans for my M20?
          yes it is. you won't use the bottom half of the muffler straps as there are tabs on the muffler for the top half of the strap to attach to.
          Last edited by Zzyzx85; 04-17-2026, 09:37 AM.
          - '89 325i 4-door, Alpinweiss, 5-spd swap (and lots of maintenance) in progress
          - '03 M3, Imolarot, 6 speed

          Comment

          • eco325iX
            Advanced Member
            • Apr 2006
            • 107

            #710
            Zzyzx85, I had to look back at those photos posted on page 47 to understand what you meant. I like this design, it will look clean from underneath!

            Comment

            • Zzyzx85
              Advanced Member
              • May 2012
              • 128

              #711
              eco325iX Yep, I learned from my first E30 😄
              - '89 325i 4-door, Alpinweiss, 5-spd swap (and lots of maintenance) in progress
              - '03 M3, Imolarot, 6 speed

              Comment

              • 88Sedan
                Wrencher
                • Apr 2023
                • 240

                #712
                If anyone cares the stromung setup weighs basically the same as my stock style Walker brand catback, somewhere
                around 28lbs. I am doing a full rear rebuild so unfortunately I won't get to test the new exhaust for awhile.

                Comment

                • afterafx
                  Noobie
                  • Jun 2012
                  • 15

                  #713
                  eco325iX Hopefully this answers your question, I bolted the stromung to the stock cat, didn't run into any issues.

                  Comment

                  • calvino
                    Member
                    • Feb 2025
                    • 79

                    #714
                    If you know your number in line from Scott, please correct as necessary.

                    325i list:
                    1. Zzyzx85 - 325i, standard - order submitted - deposit paid - received
                    2. afterafx - 325i, standard - order submitted - deposit paid - received
                    3. 88Sedan - 325i, standard, slant tips - order submitted - deposit paid - received

                    4. OldDogNewE30 - 325i, “Cabi”/quiet, double wall tips - order submitted - deposit paid
                    5. calvino - 325i, angled double walled for MTech 1, standard - order submitted - deposit paid
                    4. Alberthype - 325i, standard, angled double wall tips - order submitted - deposit paid
                    6. TC Baur MD - 325i, standard, angled, double wall tips - order submitted - deposit paid
                    7. hank6711 - 325i, standard, angled double walled - order submitted - deposit paid
                    8. E30-TourZing - 325i, standard, straight double walled - order submitted - deposit paid
                    9. KyleHugo - 325i, straight tip, standard - order submitted - deposit paid
                    10. sjmorris1 - 325i, standard - slanted - perforated tips - dual wall - order submitted
                    11. RyansE30 - 325i - standard, Mtech2 fitment, single wall angled/mitered cut tips - order submitted - deposit paid
                    12. Matt J. from SoCal E30 on FB - 325i, standard - order submitted
                    13. BB32 - 325i, Standard muffler, dual walls angled tips - order submitted - deposit paid
                    14. PortSquared - 325i, standard muffler, double walled, straight tips - order submitted - deposit paid
                    16. cirrusblau87 - 325i - order submitted - deposit paid​​
                    17. Eric O. from R3Vlimited FB - order submitted
                    18. drt213 - order submitted - deposit paid
                    19. 2006 Nissan Sentra Se - order submitted - deposit paid​​
                    Last edited by calvino; 04-21-2026, 01:36 PM. Reason: Fix duplicate

                    Comment

                    • cirrusblau87
                      Noobie
                      • Jul 2021
                      • 5

                      #715
                      Hi,

                      I'm listed as a duplicate #16. "cirrusblau87" & #17. "David W." Has anyone else started to receive their exhausts from Scott?

                      Originally posted by calvino
                      If you know your number in line from Scott, please correct as necessary.

                      325i list:
                      1. Zzyzx85 - 325i, standard - order submitted - deposit paid - received
                      2. afterafx - 325i, standard - order submitted - deposit paid - received
                      3. 88Sedan - 325i, standard, slant tips - order submitted - deposit paid - received

                      4. OldDogNewE30 - 325i, “Cabi”/quiet, double wall tips - order submitted - deposit paid
                      5. calvino - 325i, angled double walled for MTech 1, standard - order submitted - deposit paid
                      4. Alberthype - 325i, standard, angled double wall tips - order submitted - deposit paid
                      6. TC Baur MD - 325i, standard, angled, double wall tips - order submitted - deposit paid
                      7. hank6711 - 325i, standard, angled double walled - order submitted - deposit paid
                      8. E30-TourZing - 325i, standard, straight double walled - order submitted - deposit paid
                      9. KyleHugo - 325i, straight tip, standard - order submitted - deposit paid
                      10. sjmorris1 - 325i, standard - slanted - perforated tips - dual wall - order submitted
                      11. RyansE30 - 325i - standard, Mtech2 fitment, single wall angled/mitered cut tips - order submitted - deposit paid
                      12. Matt J. from SoCal E30 on FB - 325i, standard - order submitted
                      13. BB32 - 325i, Standard muffler, dual walls angled tips - order submitted - deposit paid
                      14. PortSquared - 325i, standard muffler, double walled, straight tips - order submitted - deposit paid
                      16. cirrusblau87 - 325i - order submitted - deposit paid​​
                      17. David W. from R3Vlimited FB - order submitted
                      18. Eric O. from R3Vlimited FB - order submitted
                      19. drt213 - order submitted - deposit paid
                      20. 2006 Nissan Sentra Se - order submitted - deposit paid​​

                      Comment

                      • 88Sedan
                        Wrencher
                        • Apr 2023
                        • 240

                        #716
                        Originally posted by Zzyzx85

                        nice. So they were able to do the slanted double walled tips.
                        These are their standard tips which I decided on after contacting Stromung. Sorry for the confusion. The muffler mounts at an angle and that means the tips will be pointed straight back.

                        Comment

                        • sjmorris1
                          Noobie
                          • Dec 2020
                          • 32

                          #717
                          Never ended up hearing back from Stromung and never got sent a link to pay deposit sadly. Might be selling my car now so if there was someone wanting to get in on this maybe they can reach out and try to take my spot.

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