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mininsx_imp · 07-14-2013, 06:55 AM

I haven't had my eleven for a week yet, but I'm already looking into making it just a bit louder. It seems the aftermarket selection is a little thin at the present time, and I like the look of the stock muffler. Has anyone tried drilling that baffle that you can see when looking inside the muffler?

Deanohh_imp · 07-14-2013, 07:28 AM

I thought about removing the end cap and drilling a pattern of 6-8 holes in the can then putting the cap back on. If it didn't work I could plug them with a blind rivit or rivnut and a screw. Then I saw the price of a new muffler and chickened out. Let us know how it works if you drill something

CB4ME_imp · 07-14-2013, 07:54 AM

Drilling the muffler has been popular with the Bonneville crowd.

Check this item out over at Samurider.com

[url=http://www.samurider.com/?p=9161/#itemImage]K-Factory -Straight baffle for CB1100

I'm not thrilled with the looks, but the princple is the same. And if you don't like this sound of this $100 investment, you can easily go back to the stock configuration and sell it on ebay.

mininsx_imp · 07-14-2013, 11:19 AM

(07-14-2013, 07:54 AM)CB4ME_imp Wrote: Drilling the muffler has been popular with the Bonneville crowd.

Check this item out over at Samurider.com

[url=http://www.samurider.com/?p=9161/#itemImage]K-Factory -Straight baffle for CB1100

I'm not thrilled with the looks, but the princple is the same. And if you don't like this sound of this $100 investment, you can easily go back to the stock configuration and sell it on ebay.

Drilling or gutting the mufflers was a big thing with the bike I traded in on the 1100, a Vulcan 900 Custom. I took the chrome end cap off today to see what was behind it but drilling the end plate seemed like a no-no to me. I might get up the nerve to drill inside that muffler one of these days. Undecided

FUZZY_imp · 07-15-2013, 08:11 AM

I took mine apart. The inside is very restrictive from both ends so don't think drilling will help much. Gonna take mine to my muffler guy & see if he will cut apart @ weld, gut & weld back.

mininsx_imp · 07-16-2013, 01:33 AM

(07-15-2013, 08:11 AM)FUZZY_imp Wrote: I took mine apart. The inside is very restrictive from both ends so don't think drilling will help much. Gonna take mine to my muffler guy & see if he will cut apart @ weld, gut & weld back.

That's good to know. I tried drilling the exhaust on my '05 CBR1000RR when I got it (underseat muffler) and it made almost no difference in the sound.

Deanohh_imp · 07-16-2013, 02:30 AM

Didn't the 05 have the servo operated exhaust valve? That would kill a lot of the sound unless open.

Ack-CB11_imp · 07-16-2013, 03:23 AM

(07-15-2013, 08:11 AM)FUZZY_imp Wrote: I took mine apart. The inside is very restrictive from both ends so don't think drilling will help much. Gonna take mine to my muffler guy & see if he will cut apart @ weld, gut & weld back.

Is gutting the cat is an option. I had an inline 4 bike with a header no cat that used a slip-on or the stock muffler. I'd put the stock muffler on for trips and it had a great sound that wasn't overwhelming. That stainless pipe is tricky to work with, a muffler guy could I would think.

FUZZY_imp · 07-16-2013, 03:56 AM

(07-16-2013, 03:23 AM)Ack-CB11_imp Wrote:
(07-15-2013, 08:11 AM)FUZZY_imp Wrote: I took mine apart. The inside is very restrictive from both ends so don't think drilling will help much. Gonna take mine to my muffler guy & see if he will cut apart @ weld, gut & weld back.

Is gutting the cat is an option. I had an inline 4 bike with a header no cat that used a slip-on or the stock muffler. I'd put the stock muffler on for trips and it had a great sound that wasn't overwhelming. That stainless pipe is tricky to work with, a muffler guy could I would think.

Is gutting the cat is an option. I had an inline 4 bike with a header no cat that used a slip-on or the stock muffler. I'd put the stock muffler on for trips and it had a great sound that wasn't overwhelming. That stainless pipe is tricky to work with, a muffler guy could I would think. The cat is built into the collector so don't see how. The cat is restrictive too. You can run a shorty directly off it, no baffle & sounds mean. I have a Emgo meg on right now with baffle removed(cut welds @ cap). I left end cap. Sounds pretty good. Just not crazy about the look.

mininsx_imp · 07-18-2013, 07:02 AM

(07-16-2013, 02:30 AM)Deanohh_imp Wrote: Didn't the 05 have the servo operated exhaust valve? That would kill a lot of the sound unless open.

Yeah, it had an exhaust servo valve. You'd have thought that when it was open it would have made a difference in sound after drilling but it didn't. Undecided

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