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Old Jun 3rd, 2008, 2:48 pm   #1 (permalink)
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What are these "DB Killers" I keep hearing about

Hello all

I am a long time rider but new Ducati owner ( 06 999S )
I keep coming across these DB killers in Italy and have NO clue what they are.
Are they supposed to muffle the noise? make more noise?

BTW I am looking for a used exhaust possibly just a Termi slip-on or even a half system used will be nice. In case anyone here is looking to sell.

Bike came with a NEW full OEM exhaust system thats for sale if anyone is interested (Yes I will also post in the for sale section)

Thanks
OTG
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Old Jun 3rd, 2008, 3:03 pm   #2 (permalink)
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Today I helped a friend remove his killers, he rides a KTM Duke II.

The bike finally got its breath back and the rest of the power as well

Here he is, in a typical posture :

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Old Jun 3rd, 2008, 3:37 pm   #3 (permalink)
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Quote:
Originally Posted by Oscar-the-Grouch View Post
I keep coming across these DB killers in Italy and have NO clue what they are.
Are they supposed to muffle the noise? make more noise?
dB = decibel (unit of sound measurement)

DB killers = sound mufflers

Usually are inserts in the opening of the exhaust that reduce airflow dampening the sound and slightly reducing power. I don't think any of the xx9 systems have DB killers but I could be wrong. BTW, most people leave them out/remove them anyway.
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Old Jun 3rd, 2008, 5:57 pm   #4 (permalink)
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glad someone else asked the question... I always thought they were paid assassins but wasn't sure. I was all for "removing" them either way... don't want people shooting at me when I'm riding
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Old Jun 3rd, 2008, 7:34 pm   #5 (permalink)
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EU homologation laws about noise emissions are really nasty nowadays. DB killers are just caps intended for racing exhaust systems. Basically, you use them on the street and maintain street-legal homologation . You'll take them off for your racetrack days .
However, some tracks do lately require to use them (e.g. Laguna Seca)

P.S. Yes, some Italian companies like SPARK do sell dB killers for their 999/749 exhausts
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Old Jun 3rd, 2008, 7:40 pm   #6 (permalink)
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good to know!
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Old Jun 3rd, 2008, 7:43 pm   #7 (permalink)
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I thought some of the 848/1098 Termi's have the removable DB Killers.
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Old Jun 3rd, 2008, 7:43 pm   #8 (permalink)
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I dislike db killers quite a bit as they often negate a large portion of the gains to be had by a full exhaust. Why spend $1500-$3000 on an exhaust for only a drop in weight and a visual difference! We stopped carrying ZARD exhausts with db killers and only offer them without at this point.
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Old Jun 3rd, 2008, 8:23 pm   #9 (permalink)
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Remus

The Remus exhaust cans for the 9 series come with DB in them as well. A total PITA to get them out but what a sound once they are. They say you can put them back in but once you pull them out and hear the difference you wont want to. I pretty much destroyed one of them getting it out so it wont be going back in anyway.
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Old Jun 3rd, 2008, 8:35 pm   #10 (permalink)
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example

Here is an example of a BD killer out of a Remus can...





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