F800GS aftermarket exhaust

Discussion in 'Parallel Universe' started by Bike4Fun, Nov 21, 2008.

  1. Dieselpwr

    Dieselpwr Been here awhile

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  2. toro618

    toro618 Long timer

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    I remember reading a thread on gutting out the catalytic converter with a few pictures....can someone please direct me to that thread? I have begun gutting mine out and wanted to know if there has been any issues with a different air/fuel ration.

    Thanks in advance
  3. ebrabaek

    ebrabaek Long timer

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    Fellow rider runnin4melife Southwest from you in Maryland, did it, shout him a pm, and I am sure he will answer. The limited zfe will adjust to the cat removal just fine.
  4. runnin4melife

    runnin4melife Been here awhile

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    No issues with it so far, I just fitted a LV EVO exhaust and it seems to have dialed in just fine with that. The biggest issue is whether you are a good enough welder to get it back together. I am not, but I had a good friend do it with his TIG setup. I would definitely take your time and do it right. I sliced down the middle and removed everything in aggressively gentle fashion then polished the heck out of the section with a dremel. I wish I would have had the forethought to measure temps and fuel consumption but I didn't. I will say that my anecdotal perception is that it runs cooler (exhaust), I noticed some change in the dynamics of the acceleration but not magic power gain. It does tend to back fire more (that is rare though).
  5. toro618

    toro618 Long timer

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    Thanks for the info. I basically just sawed the one end of the cat and rewelded it closed. Took about one hour inlcuding the weld. Haven't had a chance to mount it but soon.

    [​IMG]

    Drilling through the crap to break it off.
    [​IMG]
  6. ducpilot

    ducpilot Been here awhile

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    I gutted mine a few years ago before I installed the Remus headers.... last night I installed the Arrow headers so I am anxous to compare all 4 set ups. I found that just gutting the cat did not cause any real fueling issues with the factory muffler. The sweet set up seemed to be the Full Remus exhaust with the PC V. I am switching to the Arrow to get a little more low end back and get my ground clearance back up (you loose 1.5 inches with the Remus headers)

    [​IMG]
  7. Dubman

    Dubman n00b

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    Just wanted to know which headers fit with the BMW Ali bash plate.
    And how you got on with the arrow headers.
  8. craigincali

    craigincali Just hanging around

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    I haven't seen anyone mention the need for a spark arrestor, maybe is a California thing. What silencers have spark arrestor in them? It seems that none of the exhaust sites mention SA's.
  9. ebrabaek

    ebrabaek Long timer

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    Actually...... every time you ride in a national forest (US) you need to have a sparky. You can get a ticket without one.....or start a fire......or perhaps both.
  10. craigincali

    craigincali Just hanging around

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    That is my point. I haven't seen anyone post about silencers with spark arrestors (maybe they don't ride off road)...does anyone make an exhaust for the 800 with a spark arrestor?
  11. ebrabaek

    ebrabaek Long timer

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    :lol3... ahhh... I got it. I have seen them on a few yosh that I have had, and on a MRD Racing, but neither my LV first or second had them. It is a valid point, as in many places they do use the broomstick. Personally I have never been stopped in CO, or NM. :freaky
  12. itsatdm

    itsatdm Long timer

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    I have one. It is in the front of the Leo Vince exhaust can. They can poke a stick at it, or see it with a flashlight. I hope that is good enough, because if they want to see the USFS stamp on it, they will have to take the muffler off themselves and I am not supplying the Torx wrench.
  13. ebrabaek

    ebrabaek Long timer

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    Waaaaaaaat..... The LV can has a sparky....??? I was aware of the db restrictor ( not the potato in the rear) but the plate that inserts right before the pipe. You have a mesh screen in there. How did you get that...???
  14. itsatdm

    itsatdm Long timer

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    It is one of those conical looking generic $20 screens. I think it is a Pro Cycle and I bought it at Motorcycle super store.

    I trimmed around the edges of the flange a little, stuck it in the front. It is held in place by the mid pipe.
  15. ebrabaek

    ebrabaek Long timer

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    I see..... That is great. :clap
  16. CharlieK

    CharlieK Adventurer

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    Sound and weight ratio mostly...


    <iframe width="560" height="315" src="//www.youtube.com/embed/lZk27-qta48" frameborder="0" allowfullscreen></iframe>
  17. MATT0404

    MATT0404 Been here awhile

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    ^^Very nice Akropovic! I'm really liking the sound from some of the other manufacturers.

    Here's a short video I shot today of my Metal Mule (Scorpion) exhaust. This narrower exhaust comes with the Metal Mule panniers in order to keep the boxes balanced without sacrificing cargo capacity. These panniers came on my bike when I purchased it.

    <iframe width="640" height="360" src="//www.youtube.com/embed/xQpr2XaEbCI" frameborder="0" allowfullscreen></iframe>
  18. gtcoDave

    gtcoDave 2strokes2coax

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    I just bought an Akrapovic and have to say the build quality is amazing but the sound is a real let down.

    Don't get me wrong, it's changed the the bikes engine characteristics for the better. But it sounds like it's been castrated...

    There's no growl and no fury! But... If you want your GS to sound like a nice road bike, this is the pipe.
  19. gtcoDave

    gtcoDave 2strokes2coax

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    That sounds nice :)
  20. NumberCruncher

    NumberCruncher Been here awhile

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    Does the stockmuffler have a spark arrestor? I just added a Leo Vince to my 800 and never thought about the spark issue as off-road will mostly be gravel roads that all manner of vehicles cross that don't have a spark arrestor.

    NC