[wildbill]

i plan on doing a 200 klm plus trip tomorrow. do 100klm with the efi muffler's baffle out and the rest of the trip with it back in.
should give me a good idea what one works best for me

[barenekd]

The EFI has a great sound at any speed. The noise level is very middle of the pack as far as decibels go. Cops don't give you a second look at any speed, unless they are looking at you for a particular "any speed". You can still here it from about a block away puttering down the local neighborhood, but it's such a pleasant thump, it doesn't arouse animosity. Most of the people don't even look around as your thump by. By far, the best sounding pipe I've heard, all things considered.
Bare

[Gypsyjon]

Goldstar!

[wildbill]

did the 240klm run today - ran without and then with the baffle.
baffle out - pretty loud and ran ok - baffle in - still sounds good and appears to pulls the hill better.
conclusion - baffle stays

[wildbill]

forgot to mention. with the efi muffler and baffle out i experienced quite a bit of loud backfiring on throttle off.
a couple of times almost like a shotgun. 

[blaisecardoz]

https://www.youtube.com/watch?v=TydiR0_UnXE

[mattsz]

Wow, what a lot of silencer threads all in a row!  Somebody must have posted to each one.  I wish there was a link to a video of an Indore Silencer installation in one of them though.

Wildbill - that must be a pic of your EFI silencer, yes?  Mine just arrived, but it's hard for me to tell what's inside.  It's got a removable baffle in the tail end, held in place by a nut and locking washer:





When I hold it up, or shine my flashlight in this case, and look through it, light shows through clearly (no flash used for this pic):





When I look in the tail end, I can't see anything through the baffle, but through the input end I can see a tube inside, roughly the same diameter as the end pipes, perforated with small holes.  I can also see the perforated screen shown in your pic:





What makes this thing a "silencer"?  Is there some kind of packing material around the inner tube?  Aside from that permanent perforated disc and the removable baffle, it seems like it should be like a straight pipe.  How's it work?

And, are most people running this thing using the baffle?  I want a thumpier note, and a little more umph than stock would be nice; I'm prepared to live with a bit more noise, but loud definitely isn't what I'm after.  Of course, I'm going to try it with and without the baffle, but what has been your experience?