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Found this one where he says 4 1/2" holes were drilled out in each back plate:

 

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Any this one from the same guys where he just says drilled out. Can't tell if it sounds different. Wish he was out in the open, but beggers can't be choosers;)

 

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Exhaust mod.

I just did this mod and it is great!!:a18: I did it in stages like most people have said they did it. I removed first one baffle then tried it and so on. I removed both baffle's and drilled two half inch holes horizontally across from each other. At that point I ran the bike and liked the noise level so I did not finish drilling the half inch holes. This is a great mod and is very easy to do. Also it only takes maybe five to ten minutes and your done! :D

Thanks a lot for the great pics and how to!!!
 

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You guys make me laugh. Its not debaffle. If you debaffle you take the baffles out. Your just drilling them..:dontknow:

Ive debaffled and you can stick your arm up inside the pipes...Thats debaffle, when you got the baffle in your hand. LMFAO.
 

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You guys make me laugh. Its not debaffle. If you debaffle you take the baffles out. Your just drilling them..:dontknow:

Ive debaffled and you can stick your arm up inside the pipes...Thats debaffle, when you got the baffle in your hand. LMFAO.
Technically your correct. But it's not a big deal. You know what they mean.
 

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Technically your correct. But it's not a big deal. You know what they mean.
When you quote him it forces me to read his non value add crap. You're defeating my ignone option:D
 

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just drilled out the baffles on my 07 stock exhaust. removed 4 plates, 2 from the top, 2 from the bottom. tested it without the 8 1/2 inch holes in the back plate. couldn't really tell the difference at idle, not until i reved the throttle could I really notice a difference. so I went ahead and drilled out the 8 1/2 in holes in the back plates. really noticed it then, even in idle. i did notice what looks like another set of plates before the curve in both pipes. thought about drillin those out, but it sounds good enough without havin to do that, plus id need a longer extension. I think its a 07 thing with the extra plates. either way, beats spendin 600 bucks on pipes. heres to the cheap 109 riders. :a18:
 

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De-baffle'n the M

Thanks Dewmanco, I will be head to the hardware store to pick up some additions to my drill set and start getting this baby breathing !!!!! I am also about to change my clutch and thinking about going with a aftermarket cycle house high performance with MTC springs... any suggestions ??

crossq ([email protected])
 

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Baffles

Ok, I have a 2006 and I was only able to drill out 1 baffle in each pipe. I actually used 1 3/8 instead of 1 1/4" hole saw...its a perfect fit! So with a 12" extension, I can't reach #2 baffle in each...whats up? By just drilling out one it sounds chirpy when I rev it up and the rpms come back down...Not sure if they make a long extension for the hole saw I have. I'll try drilling 4 holes in the end caps and go from there.
:dontknow:
 

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Best upgrade for the money so far

:bigthumbsup:Thanks, great sound and only spent $40 total. Two walls and four holes on each pipe. Was able to use a 10" extension. Maybe as I get older and my hearing is going away I'll get to 8 holes. This sight has been great for how to's and finding parts.
 

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Ok, I have a 2006 and I was only able to drill out 1 baffle in each pipe. I actually used 1 3/8 instead of 1 1/4" hole saw...its a perfect fit! So with a 12" extension, I can't reach #2 baffle in each...whats up? By just drilling out one it sounds chirpy when I rev it up and the rpms come back down...Not sure if they make a long extension for the hole saw I have. I'll try drilling 4 holes in the end caps and go from there.
:dontknow:
On page 2 of this thread I gave pics. & a full parts list including a 18" extension you can get from Home Depot or Lowes. Why didn't you just do that? :dontknow:
 

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On page 2 of this thread I gave pics. & a full parts list including a 18" extension you can get from Home Depot or Lowes. Why didn't you just do that? :dontknow:
Yes, I went to Menards and got an 18" extension and was able to drill out the 2nd baffle plate. But lost both inside my pipes. :dontknow: Sounds a bit better...I took off the top exhaust slip on and at the cross-over pipe, inside I noticed catalayorconverter core inside...this is what is restricting the sound don't you think? Has anyone removed this stuff on the stock pipes to see how it sounds? I'd just hate to loss my stock pipe look and the cross over. I'm thinking that removing the honeycomb would let it roar better! thoughts ???
 

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Yes, I went to Menards and got an 18" extension and was able to drill out the 2nd baffle plate. But lost both inside my pipes. :dontknow: Sounds a bit better...I took off the top exhaust slip on and at the cross-over pipe, inside I noticed catalayorconverter core inside...this is what is restricting the sound don't you think? Has anyone removed this stuff on the stock pipes to see how it sounds? I'd just hate to loss my stock pipe look and the cross over. I'm thinking that removing the honeycomb would let it roar better! thoughts ???
Yes some guys have completely "Gutted" the pipes which is a true & complete debaffle job. I have not heard that in person however. With the 18" extension you can successfully drill through all three plates on each pipe. Even with all three plates bored out and 7 or 8 1/2" holes in the end cap it's still not a "loud" setup. It will however be much more throaty/sporty sounding. I have not noticed any loss of power by doing this.
 

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Yes, I went to Menards and got an 18" extension and was able to drill out the 2nd baffle plate. But lost both inside my pipes. :dontknow: Sounds a bit better...I took off the top exhaust slip on and at the cross-over pipe, inside I noticed catalayorconverter core inside...this is what is restricting the sound don't you think? Has anyone removed this stuff on the stock pipes to see how it sounds? I'd just hate to loss my stock pipe look and the cross over. I'm thinking that removing the honeycomb would let it roar better! thoughts ???
If you remove/hollow out the CAT, you will lose low end torque! You will notice a difference in performance... especially if you end up removing the cans, and putting tips on. Just a FYI!

Oh, I rans scorpion tips, with the CAT intact... That is NOT what is making it quiet. The cans, are mufflers... period. If you want to make it loud, drill/grind out the tack welds, and remove all the internals in the mufflers...
 

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Yes some guys have completely "Gutted" the pipes which is a true & complete debaffle job. I have not heard that in person however. With the 18" extension you can successfully drill through all three plates on each pipe. Even with all three plates bored out and 7 or 8 1/2" holes in the end cap it's still not a "loud" setup. It will however be much more throaty/sporty sounding. I have not noticed any loss of power by doing this.
I used to make Baffle Busters that were 24 inches long and welded together with replaceable hole saw tip. You could drill all the way into the CAT if you wanted.

As for the exhaust after debaffle,, just a little louder at idle, definitely louder under load. Perfect for those cops that want to give loud pipe bikes a ticket (i.e. Myrtle Beach).

Note: Debaffling the exhaust off the bike is a PITA...
 

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Ok, I've read each and every post. Just in case I missed something, don't bash me (there's a total of 76 posts mind you). From what I understand if you change aftermarket filters (K&N for example) using the stock cover you would require fuel management. With that being said, would a Duck's mod using the OEM filter and drilling out all 3 baffles require fuel management?
 

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Ok, I've read each and every post. Just in case I missed something, don't bash me (there's a total of 76 posts mind you). From what I understand if you change aftermarket filters (K&N for example) using the stock cover you would require fuel management. With that being said, would a Duck's mod using the OEM filter and drilling out all 3 baffles require fuel management?
From what I understand if you change aftermarket filters (K&N for example) using the stock cover you would require fuel management? NO

Would a Duck's mod using the OEM filter and drilling out all 3 baffles require fuel management? YES

Any time you increase the air flow with an aftermarket intake (including a Ducks Mod) then you really need to get a FI controller. Having said that your bike will probably run crisper with a FI controller entirely stock, but it's not necessary.

I'm running drilled out stock pipes, K&N replacement filters, Ducks mod covers & Cobra FI Controller and it all works great. (also have the Smart TRE).
 

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Thanks, that's exactly what I needed to know. :bigthumbsup: I haven't run into any performance issues that I know of since the Duck's mod, but from what you're saying I might (and probably will) with the exhaust drilling.
 

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Just got my first M109R. I have been wanting this bike since 2006. My question is Will this void my warranty?
 
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