Who has electric cutouts?

Discussion in '3-Series' started by doublespaces, Nov 4, 2016.

Trader History (0)
  1. doublespaces

    doublespaces Administrator

    AZ
    2009 E93 335i
    I remember there was a company selling an exhaust system quite some time back which made use of electric cutouts. Each side of the exhaust had two routes, one was straight through, no mufflers, the other was a bypass which directed exhaust flow through a muffler and then back into the main pipe, to be expelled through each of the dual exhaust pipes.

    Does anyone remember which exhaust this was or does anyone run a similar setup?

    EDIT: Actually, I remember now. It was called RSD and it appears to be a quad exhaust, though it may be possible to make it dual single exhaust...
    download.jpg

     
    Last edited: Nov 4, 2016
  2. I always thought it would be a cool idea for the 335. I had one on my trans am back in the day.
     
  3. doublespaces

    doublespaces Administrator

    AZ
    2009 E93 335i
    I'm already E93, so the weight doesn't bother me. Its just the reliability and power that I'm curious about. So long as the cutout doesn't block flow more than the muffler(it shouldn't). I personally prefer the single exit, dual exhaust over the quad exhaust. So if I did this, I'd route the exhaust back into the main pipe before coming out the back.
     
  4. Bumbleb

    Bumbleb Private

    When I drove around with open dps my car pulled timing like crazy due to the knock sensor so it would need to be a bit further down the line.

    -Brandon
     
  5. doublespaces

    doublespaces Administrator

    AZ
    2009 E93 335i
    Just picking up the extra resonance and vibration? I think if you did it like in this photo, and even rerouted the exhaust back into the main pipe, you wouldn't have any issues. Just extra weight and cost.
     
  6. Jboyorak

    Jboyorak Private

    I don't currently have a cutout, but I plan on building my exhaust with one. I prefer a single exhaust with using a side in and dual out muffler to maintain a factory look. The plan is single cutout right after the downpipes when I join the two banks together.
     
  7. doublespaces

    doublespaces Administrator

    AZ
    2009 E93 335i
    For me I think the cutout in the rear would be better for smell.
     
  8. Euro venom

    Euro venom Specialist Girl Club

    I'm planning on going this route with my car. It's the closest I think you can get to the akropovic exhaust.
     
  9. doublespaces

    doublespaces Administrator

    AZ
    2009 E93 335i
    Oh yes, akropovic... Haven't heard that name for a bit. Are you going to revert back to a single outlet on each side or a dual, dual(quad) exhaust?
     
  10. Euro venom

    Euro venom Specialist Girl Club

    I'm going with the Remus quad exhaust, more poo shoots!
     
  11. doublespaces

    doublespaces Administrator

    AZ
    2009 E93 335i
    Gotcha. What I've got in mind will have to be all custom, I just wonder how reliable the cutouts are and the best way to control them...
     
  12. don detta

    don detta Lurker

    21
    Northern Virginia
    2009 E90 335i lci
    @Danksies ima have zfury in maryland fab me something similar around spring time
     

Share This Page