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Anyone modded a standard Breva 1100 muffler?

Discussion in 'BNS12 Chat & Tech' started by Sport1200, Nov 18, 2017.

  1. Sport1200

    Sport1200 Tuned and Synch'ed

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    Just bought a perfect original Breva 1100 muffler. Looks really nice but I would imagine not sound as good as my aftermarket pipe I was wondering if anyone removed the baffle inside for better tunes? If so how did you do it? Thanks!
    I know it doesn't fit my Sport 1200 yet, but am looking at ways to fit it. :)
     
  2. Android

    Android Cruisin' Guzzisti GT Famiglia

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    I bought an 08 sport silencer for mine, the triangular stainless one .

    the outer stainless case is rose welded to the mounting bracket so I undid that slipped the case off and the inner stainless silencer I then cut around the weld at the tapered end which held the cat (removed that) and drilled 3off 1" holes in the baffle in the other section . then reassembled . Standard looking silencer gorgeous rich sound and very free breathing.
    My work mates(car drivers) love the sound , always opening their windows when I pass them out on the road.
     
    Last edited: Nov 20, 2017
    Sport1200 likes this.
  3. Android

    Android Cruisin' Guzzisti GT Famiglia

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    I used a 2mm wide slitting disc and cut round the edges of the welds , because the outer material was so thin and cracked from the shaking I opted to mod the 08 silencer and use that.

    DSC_0075.JPG
     
    Last edited: Nov 20, 2017
  4. Android

    Android Cruisin' Guzzisti GT Famiglia

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    Disassembly of standard silencer
    DSC_0078.JPG
     
  5. Android

    Android Cruisin' Guzzisti GT Famiglia

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  6. Android

    Android Cruisin' Guzzisti GT Famiglia

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  7. Android

    Android Cruisin' Guzzisti GT Famiglia

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  8. Android

    Android Cruisin' Guzzisti GT Famiglia

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    2008 silencer without stainless outer trim

    upload_2017-11-20_16-58-53.png
     
    Last edited: Nov 20, 2017
  9. Sport1200

    Sport1200 Tuned and Synch'ed

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    I have a standard pipe too. Your mod looks great. I have a GPR muffler that has a hole in the bottom from dragging on the road as well.
     
  10. Oz1200Guzzi

    Oz1200Guzzi High Miler

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    Standard muffler is HEAVY! It is also a Z shape internally and doesn't lend itself to modification, very easily.

    Tony, get the GPR fixed and change the mounting point, either through a short extender tube or some other mounting modification.

    I experimented with the offerings from Emgo - found they were poor quality, sounded shit and did little to improve performance until I cut out the internal mesh. Still sounded shit though, after all that.

    Todd has a nice muffler, the GTRX Reverse Cone Muffler. I have one of the early ones (I think the design has changed slightly since). Worth a look...

    Plenty of others on the market, as well.
     
  11. Sport1200

    Sport1200 Tuned and Synch'ed

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    Thanks for your replies gents. Pity the Breva pipe can't be modded easliy- very nice looking pipe and the one I bought it spotless. My other two pipes are festy. :(
     
  12. Sport1200

    Sport1200 Tuned and Synch'ed

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    Thanks too Android for the pics. I'm a bit slow though- what exactly did you do to the pipe- is the bottom pic what goes insode the standard outer. (carbon and chrome end cap???? Ta
     
  13. Earl Bowman

    Earl Bowman Just got it firing! GT Site Contributor!

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    Moto Guzzi Diet: Remove 10 lb. Catalytic Converter, Remove 11 lb. Muffler, add 12 lb. GuzziTech SS Y-Pipe and Reverse Cone Muffler, Instant 9 lb. weight loss! Add GuzziTech ECU re-flash equals more Zoom! The sound is Amazing!!! Thanks Todd!

    upload_2017-12-6_17-5-35.png
     
    Sport1200 and GT-Rx® like this.

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