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      07-15-2008, 05:26 AM   #1
booforty
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How loud is stock exhaust in decibels?

Anyone know how loud the stock exhaust is in decibels? Is it less than 100db?

Thanks!
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      07-15-2008, 08:04 AM   #2
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Definately under 100, probably around 75dbl.
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      07-15-2008, 08:07 AM   #3
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OEM Specs

moving vehicle = apr. 75 db
stationary vehicle = 92 db at 6.225 1/min
value of backpressure = 0,47 bar at 2. gear and 0,51 bar at 3. gear
weight of the muffler = apr. 21 kg
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      07-15-2008, 08:56 AM   #4
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You guys are brilliant! I knew someone would know the answer. I love this forum...
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      07-15-2008, 10:32 AM   #5
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Nice Nate, I knew that I have seen your post somewhere else. I just wasn't positive.
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      07-15-2008, 12:34 PM   #6
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So it's the same as the Eisenmann sport?

http://www.m3post.com/forums/showthread.php?t=114331
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      07-15-2008, 12:47 PM   #7
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Quote:
Originally Posted by kyoshozx View Post
So it's the same as the Eisenmann sport?

http://www.m3post.com/forums/showthread.php?t=114331
The Eisenmann Sport performance is street legal in Europe and North America. It offers the same db level as stock but with a much deeper throaty tone.

Sport performance video


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      07-16-2008, 04:25 AM   #8
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Top vids!
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      07-16-2008, 04:27 AM   #9
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So is the Eis. race legal in N. America and Europe?
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      07-17-2008, 10:24 PM   #10
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Quote:
Originally Posted by MDCTFTW View Post
So is the Eis. race legal in N. America and Europe?
+1
?? is Race is legal ??
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Coming: Vorsteiner CF VRS Rear Diffuser, Vorsteiner CF VRS Front Add On Spoiler, Eisenmann Sport Exhaust.
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      07-17-2008, 11:03 PM   #11
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And what is the db rating on the race?
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      07-17-2008, 11:06 PM   #12
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Quote:
Originally Posted by Kadarin View Post
And what is the db rating on the race?
SPORT-Version:

moving vehicle = 75 db
stationary vehicle = 92 db at 6.225 1/min
value of backpressure = -25%
weight of the muffler = apr. 21 kg

RACE-Version:

moving vehicle = apr. 95 db
stationary vehicle = apr. 102 db at 6.225 1/min
value of backpressure = apr. -32%
weight of the muffler = apr. 21 kg
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Coming: Vorsteiner CF VRS Rear Diffuser, Vorsteiner CF VRS Front Add On Spoiler, Eisenmann Sport Exhaust.
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      07-18-2008, 11:50 AM   #13
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Quote:
Originally Posted by 2FED View Post
+1
?? is Race is legal ??
The Race system is not TUV approved for road use in Germany.

The Sport system is TUV approved and road legal in Germany as well as US.
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