Ducati.ms - The Ultimate Ducati Forum banner

1 - 13 of 13 Posts

·
Registered
Joined
·
949 Posts
Discussion Starter #1 (Edited)
How quiet (or loud) is your Multistrada 1200/1260 DVT exhaust system?
Here's an opportunity to put numbers to your after-market system in an effort to assist those looking at replacing their stock exhaust.
Let's differentiate the good from the bad and ugly...or whatever you prefer.

To do so, we require a base-line standard such as SAE J2825.
Using the following methodology:
The decibels are measured at an angle of 45°, same height and 20 inches from the exhaust. Idle and 2000 rpm (for a twin) and preferably in an area without resonance.

Using SAE J2825, a stock 1260 Pikes Peak obtained the following reading with my Radio Shack Decibel Meter as shown:
87 db at idle
About 90db at 2000 rpm.

No sound meter? No worries. There are many sound meter apps available for both Android and iPhone.
For your convenience, I previously calibrated the (3) free apps on my android phone to coincide with my analogue sound meter as follows:
Sound Meter app: +10 db
Decibel Meter app: +14 db
Decibel X app +2 db

I particularly like the first two on my list but they do require calibration (to a known sound level) before using. Decibel X was just about right "as is" (it was only off by 2 db's) but has a lot of advertising.


Be sure to state what system you have installed: Cat-less, Slip-on, Full Sys, Make, Model etc.
Keep in mind that deviation from SAE J2825 will substantially alter your results. The devil is in the details.
 

Attachments

·
Registered
Joined
·
14 Posts
My 2010 1200MTS has a Leo Vince mid pipe, Termignoni tip and a fully dyno tuned map using Tuneboy.

It was 96dB at idle, 102dB at 2000 rpm and when I crack the throttle and it hits 7500rpm or so...... it hits 124dB!!!!

Needless to say it's very hard to idle around and be quiet.
 

·
Registered
Joined
·
949 Posts
Discussion Starter #3 (Edited)
Hi Mike, I can relate to that. I became interested in sound levels a few years ago when LEO initiated a road-side testing program. I was concerned that my Monster with a de-cat SC-Project exhaust would not pass without its baffle.
Consequently, I compared its sound level "back to back" with my stock Panigale. I figured that if it wasn't any louder than the stock 959 Pani, i'd have the legal high ground. Turns-out the Monster (which is loud @ 97 ~ +100db) was not any louder than the stock Panigale. Go figure? Not sure about the new V4's but Panigale v-twins are loud, right off the showroom floor!
According to the following table, a stock 2016 Panigale 959 is twice as loud as a stock 2018 Multistrada 1260 at both idle and 2000 rpm.
 

Attachments

  • Like
Reactions: littlebob

·
Premium Member
Joined
·
289 Posts
I'd like it if someone would post readings for a full Termi system with and without db killer!
 

·
Registered
Joined
·
863 Posts
Typical phone mic will clip around 82-85dB? so you can't measure beyond that with a phone.
 

·
Registered
Joined
·
949 Posts
Discussion Starter #7
Typical phone mic will clip around 82-85dB? so you can't measure beyond that with a phone.
I have read that may be true for some phones. For those really interested, stand-alone sound meters are not expensive.
FYI, my Samsung Neo has tested up to 110 with the Decibel X app. Haven't had the opportunity to push it beyond that.
 

·
Retired Pipe Polisher C2H6O+
Joined
·
19,072 Posts
Typical phone mic will clip around 82-85dB? so you can't measure beyond that with a phone.
Depends on the phone and the software used.


I find the FFT software on my iPhone compares closely to my Rat Shack dB meter I use for audio applications and the track side meters I’ve compared it to up to around 120 dB.


Sent from my iPhone using Tapatalk Pro
 

·
Registered
Joined
·
45 Posts
2016 1200S w/ Arrow Works Titanium with decat link pipe. The Rapidbike EVO is currently on my work bench, so it still has the factory tune.
I used the Decibel X iPhone app and the SAE J2825 method.

ETA: This measurement was taken with the baffle removed.

 

·
Registered
Joined
·
949 Posts
Discussion Starter #10
Those DB's are quite reasonable given the hardware. Actually, good in fact.
Yep. It's loud but not obnoxious. Ear plugs, Yes. Three hours of riding, No.
Borderline track standard. BTW, thanks for testing.
 
  • Like
Reactions: AK-Bandit

·
Registered
Joined
·
153 Posts
I have a 2013 1200S Multistrada, with an SC Projects oval exhaust (complete system, no cat).

The legal requirement here is 86db drive by and 100db stationery. When I got my last warrant, the tester produced a mike thing (I assume a db reader) and asked me to blip the throttle to 5,000. I went a bit over, and the reader said 124db ... I’m not convinced by this test, but I persuaded him to pass it anyway.
 

·
Registered
Joined
·
949 Posts
Discussion Starter #12
I find the FFT software on my iPhone compares closely to my Rat Shack dB meter I use for audio applications and the track side meters I’ve compared it to up to around 120 dB.
About Track-Side testing:
Is there consistency in testing methodology across multiple tracks? Don't know, Do tell?
My local track looks at 2/3 of Red-Line @ 15 feet both in front and behing the bike with no readings above 100db.
 

·
Premium Member
Joined
·
19 Posts
Here is mine using decibel X on iPhone 11max.
'14 PP, Mivv Suono + Mivv decat, w baffle; idle 86, 2000 91
w/o baffle; idle 90, 2000 97
'19 SS, QD Gunshot 60 + QD decat no baffle; idle 97, 2000 105
There is a baffle on the way. Its a race only exhaust (60mm pipe) like the CR-T.
 
1 - 13 of 13 Posts
Top