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Discussion Starter · #1 ·
Did my own video of drilling baffles. Went from 1 small hole - 2larger holes and next is 3rd hole soon.

 

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That really shows the sound difference with different holes. Next you need to move the license plate up and trim the plastic fender!
 

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Nice.......
My wife commented the other day she never hears me when I come home....at least til I'm in the garage.......That has to end......

I'm thinking of drilling mine out tomorrow.......may go with 12/3/6/9 .......start small, and end up at 1/2"

Have my first service Monday, wonder what the dealer will say?
 

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Discussion Starter · #4 ·
cdirth said:
That really shows the sound difference with different holes. Next you need to move the license plate up and trim the plastic fender!
Got it done the other day. So much good help on here it's priceless.
 

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I've got 4 1/2" holes in each pipe. My roomate used to say the same thing, he could never hear me. Now he says you can definitely hear me coming from down the street (we live in a quite family orientated neighborhood).

:edited because I can't spell worth a ****.
 

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My pipes have been drilled..... Love the rumble 8)

Made a template with holes at 12, 3, 6, 9, started small and went upto 3/8....gonna leave it there for at least a week
 

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I see some guys are drilling the 4 hole route...but I'm curious why not just use a hole saw and take out most of the center...looks wise I mean...I removed the baffles on my m50 that way...I was just curious if anyone has done this..I just don't like the way it looks with the 5 holes.
 

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Discussion Starter · #9 ·
You can do that but then what would hold the center pipe from bangin around?
You can also knock out the center plate and it should sound about the same they say. Haven't heard it yet.
 

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SmokenJOE said:
You can do that but then what would hold the center pipe from bangin around?
You can also knock out the center plate and it should sound about the same they say. Haven't heard it yet.
I haven't pulled one apart yet...but sure will...still aftermarket is the way to go...just trying to come up with something to do without spending the money on a tuner just yet.
 

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I was wondering if some one could give me an opinion on the best configuration on drilled baffles and how it effects tuning balance back presser and horse power and even warranty.
 

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Discussion Starter · #14 ·
toby said:
I was wondering if some one could give me an opinion on the best configuration on drilled baffles and how it effects tuning balance back presser and horse power and even warranty.
IMO........There is no special configuration. I tried to use the 12/3/6/9 clock pattern. But still have only 3 holes. Sounds good like that and loud enough for me.
Anything much smaller that 15/16" or 1/2" wont give you much rumble. Drill one at a time till you get the sound you want. Another suggestion was to drill out the center baffle way inside the center pipe. I would probable us a punch for that though. But I have never heard what that sounds like.
 

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Four 1/2" holes sounded the best to me. Use a unibit it steps up in size the further back you go on the bit. It makes drilling the holes easier. I drilled out the main baffle and the bike popped and cracked bad under deceleration. Wouldn't recommend it unless you get a programmer.
 

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On my stock mufflers I used a 1" hole saw on an extention to drill out the center piece. Sounded decent but not quite loud enough. Then I used the same hole saw to drill one more hole directly above the center pipe. I thought that sounded really good, and you couldn't tell it was done unless you kneeled down to look at it. For me personally though, that still wasn't loud enough. I've gotten mixed reviews though on the custom exhaust I built, so I'm not sure what I'm going to do with it when I pull it out of storage in the spring.
 

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Another note:

I talked to the dealer before I did any drilling, and they told me that it will only void the warranty on the exhaust system.
 
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