Slip on exhaust canister ideas

Discussion in 'GS Boxers' started by Rogue Ranger, Feb 22, 2013.

  1. Oilhed

    Oilhed MarkF

    Joined:
    Oct 17, 2003
    Oddometer:
    6,111
    Location:
    Connecticut
    It's interesting. The baffle is just a piece of wool held against the pipe with wire mesh. Looks very well made. It came with a nice smooth shiny finish. After an hour ride it's neither shiny nor smooth. No blistering and I can't peel the finish off but it looks more like a new BarBQ grill. It didn't get that hot. Nothing like the cat. The cat still turned water to steam after 5-10 min. but I could touch the pipe with a bare hand.

    Sounds same as just the cat with maybe a little more howl if that's possible. Really happy with the performance. No pop on decel. and it seems to spin up quicker than with the huge muffler.
    Video:
    [​IMG]
    #41
  2. CousinDave

    CousinDave Adventurer

    Joined:
    Aug 28, 2008
    Oddometer:
    79
    Location:
    Dallas TX
    Thanks for the update! I wondered about the black finish longevity. I was thinking I would do chrome if I tried one of these. But I wonder about that finish too. However, the pipe contraption I put together from autozone is still making me very happy. Except for the baffle, it's seems pretty similar. I'm going to see how long I can get away with it.

    I too noticed no pop on deceleration. In fact, the only way I get a pop is if I chug it down in at least 3rd. But that would happen with the stock silencer anyway. I think the thing to keep in mind is that the CAT truly does do most of the silencing work and back pressure.
    #42
  3. Oilhed

    Oilhed MarkF

    Joined:
    Oct 17, 2003
    Oddometer:
    6,111
    Location:
    Connecticut
    What does that giant OEM muffler really do, drop it 1-2dB?
    #43
  4. CousinDave

    CousinDave Adventurer

    Joined:
    Aug 28, 2008
    Oddometer:
    79
    Location:
    Dallas TX
    Yeah, not much. Probably a little more that 1-2 db's in my case, but that's about it. For weekend riding with my group and my daily commuting, I don't need the silencer. If I knew I'd be out on a forestry trail or some place that the less noise pollution the better, I'd switch back to factory for sure. But of course, my factory silencer has a broken part inside of it right now, which is why I did this mod in the first place. I think I may try to open up the silencer and fix it then perhaps rivet it back together. That's for another day :)
    #44
  5. Oilhed

    Oilhed MarkF

    Joined:
    Oct 17, 2003
    Oddometer:
    6,111
    Location:
    Connecticut
    The stubby is fine for me for now. If I need more I'll get a Supertrapp 4 stroke universal.
    #45
  6. def

    def Ginger th wonder dog

    Joined:
    Feb 28, 2004
    Oddometer:
    13,570
    Location:
    The woods and mountains of Alabama
    Is that a nasty oil leak under your rear tire or did you park where a Harley had just departed from?
    #46
  7. Oilhed

    Oilhed MarkF

    Joined:
    Oct 17, 2003
    Oddometer:
    6,111
    Location:
    Connecticut
    Rain
    #47
  8. fred flintstone

    fred flintstone Been here awhile

    Joined:
    Apr 12, 2009
    Oddometer:
    816
    Location:
    Above 7600 ft.
    Guessing those shorties would be too loud for Y-pipe (no cat)? I like the idea.
    #48
  9. CousinDave

    CousinDave Adventurer

    Joined:
    Aug 28, 2008
    Oddometer:
    79
    Location:
    Dallas TX
    Yes, quite loud. Here's a video a fella posted that may give you some kind of idea what a y-pipe would sound like.

    http://www.youtube.com/watch?v=k1mZ8UnKT6o
    #49
  10. fred flintstone

    fred flintstone Been here awhile

    Joined:
    Apr 12, 2009
    Oddometer:
    816
    Location:
    Above 7600 ft.
    Yeah I saw that video earlier, thing is you can never tell how loud it really is unless it is under load. I have a Y-pipe with the stock canister and it is pretty quiet. People say the cat does most of the muffling but the stock can does a lot too. Enough that removing it would probably be too much.

    It never ceases to amaze me how much manuf get for aftermarket cans.
    #50
  11. Oilhed

    Oilhed MarkF

    Joined:
    Oct 17, 2003
    Oddometer:
    6,111
    Location:
    Connecticut
    #51
  12. fred flintstone

    fred flintstone Been here awhile

    Joined:
    Apr 12, 2009
    Oddometer:
    816
    Location:
    Above 7600 ft.
    #52
  13. Oilhed

    Oilhed MarkF

    Joined:
    Oct 17, 2003
    Oddometer:
    6,111
    Location:
    Connecticut
    Add more discs or get the open end cone. It's tunable!
    #53
  14. CousinDave

    CousinDave Adventurer

    Joined:
    Aug 28, 2008
    Oddometer:
    79
    Location:
    Dallas TX
    Hey OilHed, did your new "motogp" pipe come with 1 or 2 baffles inside? Does it provide for any back pressure you think?
    #54
  15. Oilhed

    Oilhed MarkF

    Joined:
    Oct 17, 2003
    Oddometer:
    6,111
    Location:
    Connecticut
    Barely one. They have a double option. Cannt imagine it provides any back pressure.
    #55
  16. CousinDave

    CousinDave Adventurer

    Joined:
    Aug 28, 2008
    Oddometer:
    79
    Location:
    Dallas TX
    Thanks for the input. Was wondering.
    #56
  17. ErockPDX

    ErockPDX Adventurer

    Joined:
    Mar 18, 2013
    Oddometer:
    81
    Location:
    Portland, Oregon
    I did this to my 2001 r1150--fantastic mod. I bought a $7.99 1 1/2" slip-on downturn, cut four 1" long longitudinal slots in the female side so it could "clamp" and used the stock exhaust clamp-with-chrome-clamshell-thingy. Doing the Steptoe Mod was crucial to getting the popping on decel under control for me, but that was an easy jumper wire.

    *My new-to-me bike came withOUT the little pink chip, so that may have been why it needed the Steptoe.
    #57
  18. Ravenslair

    Ravenslair Been here awhile

    Joined:
    Feb 29, 2012
    Oddometer:
    536
    Location:
    Placer County, California
    Got the parts at Napa that CousinDave used for his turn down pipe. The stock can must be lined with lead. That thing is heavy. Anyone think one of these would be worth installing in the CousinDave setup for a little back pressure? They are about $5 on eBay.

    [​IMG]
    #58