Ducati Monster Forum

For anyone interested, my `09 M1100S was delivered new with Termi slip-ons, matching ECU, and air filter. That's all well and good but, for my particular preferences, the straight-through mufflers were slightly too loud for comfort. So, I installed the Termi dB Killers and took a ride. As I expected, the Termi noise suppressors made the exhaust system too quiet (from one extreme to the other).  :-\

I decided to cut off the closed ends of the Termi dB Killer tubes to liberate more sound and allow more gas flow. This combination produced a nice "middle-ground" growl that was not obnoxious and could easily be throttle-modulated to modest sound levels when desired. But...it was still just a tad too quiet for me so I completely cut out the dB Killer welds that hold them together and, sure enough, they fell apart into their component parts. At this point, I was only after the dB Killer "rings" (with nuts) to use minimally as diameter reducers in the muffler outlets. I installed just the rings, took another ride, and EUREKA...they sounded jusssst right for me.  ;D

With only the rings installed, the 1100 still has a strong bark when the throttle is blipped but the sharp "crack" of straight-through mufflers is somewhat attenuated. Obviously there is nothing scientific about this mod but if your Termis' are too loud without the dB Killers and too quiet with them, one of these dB Killer mod stages might be right for you. It works for me!

Note: I did this at home using an air compressor and air grinder. It could probably be done with a Dremel tool too.  ;)

(http://www.zenfire.ws/Ducati/dBKillers1.jpg)
(http://www.zenfire.ws/Ducati/dBKillers4.jpg)
(http://www.zenfire.ws/Ducati/dBKillers5.jpg)
(http://www.zenfire.ws/Ducati/dBKillers2.jpg)
(http://www.zenfire.ws/Ducati/dBKillers6.jpg)
(http://www.zenfire.ws/Ducati/dBKillers3.jpg)

Cheers!

Hi,

Same 'problem' with M696... or with neighbours.  [roll] Any before/after or with and w/o soundclips available ?

rsy,

Sorry, no sound clips--I've had a health/physical therapy issue for a few months and haven't done much else lately.

However, I can say with near certainty that cutting the dB Killer tube ends as shown below (Stage One of the mod) will incease exhaust sound and flow volume enough to satisfy most performance-oriented riders without attracting unwanted attention. It offers a really authoritative "bark" without being obnoxious. I'm willing to bet that the Stage One mod would not be too much bark for you, nor for you neighbors when the throttle is modulated, and...you could always make the Stage Two mod later if you want it even louder. Conversely, if it proves to be too loud, you could have the end caps welded back on.

(http://www.zenfire.ws/Ducati/dBKillers5.jpg)
(http://www.zenfire.ws/Ducati/dBKillers2.jpg)

Cheers!  ;)

I might have to do this... neighbors are complaining that the termi's on my 696 are too loud when I warm it up for the morning commute.  It's the bass/lower frequencies that wake them up.

It's easy.

On my Arrows I ended up cutting the db killer down to about a 1/3 its original length.  So just the flange and two inches or so of tubing.  It is about half as loud as straight through now, and retains most of the depth and smoothness in the tone that we all love.  It is pretty quiet down low, and perks up when you get on the gas.  I find it to be a nice balance.

It's so easy to test that I'd just cut the baffles down a few inches at a time and see where you think a fair balance between neighbors and mayhem occurs.

I need to find a spare set and give this a go.  Anybody know where I can pick these up online?

If this post seems like a hyjack Adms please move accordingly.
Are Termis installed with an associated DP ECU calibrated for the pipes and air filter?  If true I suspect a richer air fuel mixture is now present with DP ECU over the stock ECU. True or False assumption?
If db killers are installed impairing exhaust gas flow does that mean the A/F mix is now too rich?

Does it really matter?

Yes, the termi kit comes with a highflow filter and a new ecu (to take advantage of the high flow filter and not so much the slip ons).  Yes, the bike runs richer.

"Does it really matter?"  No.

how can the exhaust being restricted with the DB killers make it run richer? doesn't make sense.

To clear up any confusion, I was saying the bike runs richer with the termi/dp ecu/filter AND NOT with the db killers.

Hi, does anybody know where I can buy spare part DB-eater?

Should I mod the killers before the dealer installs them and tunes the bike?

I'd like to know also, before I hack mine up.

we all need some spares....  should i hack before or after install, or does it matter?

I searched for dB Killers for my Termignoni mufflers and found none. :-[ Your searches might be more productive. I think any "tuning" difference will be very small either way and therefore not much concern in terms of air/fuel ratios. I suggest that you install the pipes first and go from there with dB Killer mods to your personal preference as the sound levels dictate.

my mods to the db killers was more simple.

rather than cut off all of the inner tube, all i did was take the original db killer and the closed end, i drilled a 5/8 inch diameter hole right there so that there was a straight path for exhaust to go through.

some have asked how this sounds.  try this. put the db killers in before you mod them and listen to the exhuast.  you will notice it it almost stock quiet but still has the distinct "termi" low rumble but very quiet.  when i did my mods i first started with a 1/4 drill bit and drilled the hole and listened to them again.  this made almost no difference.  As you use larger drill bits to expand the hole the sound got louder but only in small amounts, when you go up to 1/2 inch diameter to 5/8 diameter you are no longer as quiet as stock at all, but you are not blatantly loud at idle either.  you can definitely tell its louder than stock no doubt but when idling its nowhere near obnoxious at all, its only when you start to rev up to 3k rpm and higher does it now really get louder than stock by a good amount but again nowhere near as it would be without db in them at all.

others do more drastic mods to the db killers, my mods to mine were much less drastic and make a very subtle change to them that i think most people would be happy with the sound that i get from mine, they still have the termi sound but it will no longer annoy neighbors.  also if a harley with straight pipes pulls up next to me, you won't even hear my bike anymore at all.

Strafer: thanks for your DB Killer mod's advice.  [bow_down]

After installing my slip-on kit this weekend I found with DB Killers in the bike was very quite, In fact I think the stockies were louder!! [thumbsdown]

Anyways I completed your 'Stage 1' mod first however I didn't notice much of a difference, I then cut them down again past the holes but still not much of a difference. I then completed 'Stage 2' with the DB Killer 'ring only' and your right its nice but without the massive 'basey drone' that your neighbours/policeman hate.  [thumbsup]

BTW: I may be a little biased to some with the noise as I had a Ducati Monster M900I.E '02 before with baffles completely removed from stockies but I believe this is quieter than that with the 'Stage 2' mod in place.

You are welcome.  [beer]

BTW all;

I decided to search around for a pair of 'spare' DB Killers just in-case. I was lucky enough that my cousin came through with a pair for me. However on my search I found that http://www.ducatiperformance.com/ (http://www.ducatiperformance.com/) can order these in for you. They don't have them listed on their site but I said to sales to list them up in which they agreed as I explained there is others looking. He explained they are $92.80 (US) for the set and would need to be ordered from Ducati Italy (2week turn around).

Anyways if you really need them then this is an option for you.

That's good (and expensive) info.  [thumbsup]

STOPPPPPP CUTTING !!  ;D

check our look-a-like killers  [laugh]

(http://www.desmoworld.com/shop/media/catalog/product/d/b/db.gun.jpg)

(http://www.desmoworld.com/shop/media/catalog/product/d/b/db.ll.jpg)

(http://www.desmoworld.com/shop/media/catalog/product/d/b/db.ol.jpg)

http://www.desmoworld.com/shop/de/catalogsearch/result/?q=eater+scheiben&x=0&y=0 (http://www.desmoworld.com/shop/de/catalogsearch/result/?q=eater+scheiben&x=0&y=0)


we can do this in different inside/outside diameters ... price for a pair ... less expensive that spare killers  [thumbsup]

for any question let me know

Bye
Chris

Ach sheisse... there goes more money... 

How much are the colt style shipped to 80130?  Can you translate all of the description for us?  How about a shot of them in a Termi?

Will these fit 696 termis?  How much for a pair shipped to North America?

Hi Guys

at the moment i never hold a Termi for 696-1100 in my hands, so i dont know the dimension
if you let me know the dimension ... they will fit  ;D

of course i can check the dimension self ... after EICMA Show in Milano

shipping 8.50 Euro , so a set costs 29.46 shipped

Chris

Yeah I have an 1100, I think they may be different...  I can wait for you to measure.  I assume the 29.46 is euros?  Theprocess and I are in the US....

oh yes of course ... forgot the "Euros" !  ;D

btw termi 696 & 1100 are the same

i will do some pics inside a termignoni asap

Thanks!  I may have to get these.  Any idea how much they reduce the "open" db?  I want to take the edge off when in the neighborhood but open it up in the mountains!   [leo]

I also decided that my Ti Sil Motos needed some db killers, didn't want my M800 to be my neighbor's 0530 wake up call. Couldn't find any, so I had to make them myself...

(http://i154.photobucket.com/albums/s253/mendoje1/Ducati%20Monster%20800Sie/homemadeDBKillers.jpg)

But you'll need one of these too:
(http://i154.photobucket.com/albums/s253/mendoje1/South%20Bend%20Lathe/IMG_0168-1.jpg)

Jeff

Wow, some nice machining there!! Great stuff guys, love it! Just to add, my Leo vince with the Db killers installed is pretty much like the termis with the ends cut out, it is straight through just right at idle and when you open up, it gets the Ducati boom!! No waking up neighbours, lets not be like the "other" V twin riders, that is why we got Ducs, a class above!!

(http://farm5.static.flickr.com/4081/4895701758_8dcc00d2c2_b.jpg)

Here is my other bike (besides the M1100) and us "other" V-Twin riders aren't all a-holes just like all duc riders aren't saints.  Not starting a war, just sayin'......

True  [moto]

Hey that's quite some motor you got driving that there belt sander  [cheeky] ;).

Seriously, although its so much Not My Style that I struggle to comprehend......  I can appreciate the quality of the work and the obvious fastidiousness with which its kept  [thumbsup].

+1  [bow_down].

M1100 Termi Db Killers O/D = 48mm.

Thanks UNG.  I forgot to add, these pipes have baffles in them!  So we all are happy.  It is quite loud when you hammer it, though.(http://farm5.static.flickr.com/4096/4895097103_ca00b82641.jpg)
 

Chris:

I sent you and email on termi pipes and would like to purchase the baffle end.  The M 1100 termi is 1.91" in outside diameter.  The stock inside exhaust pipe is 0.5".  I think a 1" would sound perfect but a 0.75" may have enough db.

I am ready to order if you are ready to mfg.

Thanks

you sent or you will sent ?

no message in my pm box ?

please resent if allready done

Chris

Get new neighbors.   [laugh]

Chris:

PM sent to you on purchase of baffle for M1100.

Thanks  Lowhog

Thanks for posting this exhaust mod.  I did it to the db killers on my 696 this past weekend and I'm very happy with the results.  Volume went from an 11 to about a 6 or 7.  A lot less popping on no throttle down a hill as well.  Still has the nice growl that isn't there stock.

I have the same problem with my Leo Vince CF Oval Evo IIs.  Silencer installed, too quiet.  Silencer out, too loud (for the neighbors).  The Leo Vince silencers looks exactly the same as the Termis except it doesn't have any end caps, just a straight tube with a flange.  I figure I can 1) cut the length of the tube smaller or 2) drill holes in the side of the tube.  I don't think I can remove the flange or the ring as that's where the bolt is for mounting.

Anyone go with the Desmoworld dB killers from Chris?

How did they go?

I am interested in the Desmoworld inserts as well.  Their website lists "out of stock."

What size did you guys order?

Hi everyone.  I know this is an old thread but thought I'd give it a shot.  I'm in the same situation.  No DB killer is too loud and Termi DB killer is too soft.  I have a 2009 Monster 696 but my DB killers look different.

(https://lh5.googleusercontent.com/-coEczR7H2g4/T5wWYN6YbAI/AAAAAAAAAhY/n3_jSudkzcI/s912/Photo%2520Apr%252028%252C%252012%252000%252052%2520PM.jpg)

(https://lh3.googleusercontent.com/-j4_dELk3yTc/T5wWYbqR5WI/AAAAAAAAAhc/TD4DSdGgtFQ/s912/Photo%2520Apr%252028%252C%252012%252001%252008%2520PM.jpg)

So, looks like the bottom is already open.  I could try some holes on the tube so that I can take some small steps to get to the sound I like or I could just jump to the later part of the mod and just go for the ring.  Did anyone else's killers look like this?  Is this the 696 version versus the 1100?

Thanks.
Adam

OH YEAH!!!  I just did this mod with my EVO 1100 termis.  My biggest challenge was how was I going to get through the weld.  Used a hacksaw, worked great and only took 10 minutes to do both DB killers.  The cylinder just fell out once the weld got cut through.  Very easy.  Now the exhaust sounds PERFECT.  Snarly and deep without being obnoxiously loud and attention hogging.  If I ever do want it louder I guess I can always remove them.  Before modification, they were just too quiet in.  Great thread!

Just did the mod to my 1100S, I cut everything off to just leave the rings. Awesome balance of sound now, still loud but not too loud. I have a cheap db meter on my phone and it dropped the decibels by about 6 or 7. Like I say it is a cheap app so take it for what it is worth, however the sound is great. I kept taking the baffles out and then putting them back in, now it seems perfect.

Cool...!  ;D

Mine have the cap on the end. 696 inner tube diameter looks smaller than the 1100 version.

Still havent done this mod. Anyone know if Chris made those db killers? Is he still in business?

Hi,
Mine looks just like AdamF's db killers.  And Yes, Chris did make them.  I bought his about a month ago.  It was roughly $50 with shipping from Germany to California, USA.  Got the 47.5mm after getting in touch with him.  Got this one, the legal look db eater since that was all he had in stock:  http://www.desmoworld.com/shop/de/db-eater-legal-look.html (http://www.desmoworld.com/shop/de/db-eater-legal-look.html)  The sound is sweet music.
-drew

I have a 2011 796 with termi carbons. The DB killers did not have an open end. Like everyone else bike was way too quiet with db killers in and too loud with them out. I tried the whole ear plug thing and couldn't deal with it. Instead of modding the Termi db killers I ordered the DB killers in 47.5mm size from Desmoworld. After a week of nothing, I was delighted when I got a response back. A very helpful employee named Tina (I believe) processed the order. Cost me a little less than $50 shipped from Germany to CT and took about a week. The Desmoworld DB killers are a perfect balance, loud enough and I do not need to wear ear plugs. This also allowed me to save the stock termi db killers in case I ever sell the bike or pipes. The sound is very similar to my former bike (2006 S2R1K) which had Arrow pipes on with no baffles. I still can't believe how much louder the Termi's are than the Arrow's with no baffles. Strange. In any case I am very happy that I found a solution. Best $50 I have spent in a while!

I would like to go this route; can you (or anyone else - I realize this thread is old) confirm which part to order?  There are a bunch of options in various shapes and sizes on their site and I can't seem to find a 47.5mm option (there are a couple of 47.65mm).

The Termis are insanely loud!  Louder than my Sport 1000 was with Termis with the db killers removed.  Part of me likes it, but I'm certain the neighbours don't appreciate being awakened early in the morning, and I don't want to have to start wearing earplugs during my commute.

Will the DP ECU need to be re-tuned with db killers installed?

I got the 47.5 mm.  Also, I did not have to have the ECU tuned for it.  I do get an occasional pop on deceleration, not major.  They sound great I might add.

Hope you are able to find them in stock.

Thanks!  They appear to have a 47.45mm, but I sent them a message asking about a 47.5mm version.  Hopefully I receive a response (I never received a response to the last email I sent them, but that was over a year ago).

No response to my email (yet), but these ones are available in 47.5mm:

http://www.desmoworld.com/shop/de/db-eater-legal-look.html (http://www.desmoworld.com/shop/de/db-eater-legal-look.html)

They are just the end pieces, though; do they look like what you have?

Yep, those are the exact ones I bought because they did not have the other style in stock.  Made little difference to me since they were going in the pipes.

I encountered slow email responses too.  I think I found them on Facebook and sent them a message there and got a prompt response though.

Hope you are as satisfied as I am with them  :)

Thanks!  I've tried to place an order; we'll see how it goes.  :)

Well, the DB killers arrived.  They are quite nicely made, especially considering they won’t really be seen once installed.

Of course, now that I have them, I’m reconsidering installing them.  lol   Sometimes I like that the Termis are loud, and they look so much better with open ends.  I’ve passed some cops and haven’t been stopped (yet), and the neighbors only made a ‘passive’ complaint – “So, you have been riding your bike to work...”  ;-)
 
I may just leave them out and hang onto them in case the police start cracking down.