ADVrider

Go Back   ADVrider > Bikes > Orange Crush
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-14-2008, 12:40 PM   #46
PowerCell
SE990R
 
PowerCell's Avatar
 
Joined: Sep 2005
Location: Southern Kalifornia
Oddometer: 2,192
Thumb

This thread doesn't really apply to me as I kinda like my pipes a little loud - so I can tell where I'm at RPM wise. But I'd like to send out a big THANK YOU to Cyborg for putting such useful and helpful information together. You really do put the word "community" into community forum.

Thank you sir!!!
__________________
~ Ken


www.powercellperformance.com
PowerCell is offline   Reply With Quote
Old 04-14-2008, 05:05 PM   #47
mcmann
Motorcycle Maniac
 
mcmann's Avatar
 
Joined: Nov 2006
Location: Jefferson, GA
Oddometer: 1,479
Great Job. I had to further modify my pipes to make neighborhood friendly.
I extended the inside copper reducer with a 45 degree Street Elbow & added a reverse 1" to 3/4" Copper reducer to the end of the pipe.

This put it back to stock sound and works great with stock lean jetting.





Quote:
Originally Posted by cyborg
Received the dB-Dawg units in for my 990S. Very nicely made parts.



They installed just fine, plenty of depth for them.



Then I ran the MIC Sound Tests over again at 4750 RPM per manual -- on all the options, to have same relative conditions for all.



Also got the opinion of several people just listening to it, and took a few rides and a few WOT sessions to get the audio impressions.

The results (approx +/- .2dB on an analog meter):

FMF Q4's "KTM" branded.

Full Open, all inserts removed:
1500 RPM Idle: 84dB
4750 RPM Test: 98dB

With stock OEM FMF spark arrestor inserts:
1500 RPM Idle: 83dB
4750 RPM Test: 93dB

dbDAWG
1500 RPM Idle: 83 dB
4750 RPM Test: 93 dB

Copper reducers 1" to 3/4" ID installed:
1500 RPM Idle: 81 dB
4750 RPM Test: 92.5dB


Bottom line for me, the $84 (for the pair) dB-DAWG's don't reduce sound level any more than the stock FMF spark arrestor inserts. They may offer better flow/performance but without a dyno I would not be able to tell. Not much difference in 'tone/sound' either.
To be fair, the dB-DAWG's are usually used on racing cans that started out with no inserts, and in that case they really do drop the dB's significantly per my data above.

I had hoped for better results and wanted to return them, but the the DirtWerkz folks won't take them back even though I kept them in great shape. Guess I was the $90 Guinea pig on this one.

I'll try to sell them in the Flea Market.

Attached Images
 
__________________
Young at heart . . . Never met a bike I didn't like
Motorcycles: my Happy medicine

2011 DL650 V-Strom "Real World"
2014 FZ-09 for the "WOW World"
mcmann is offline   Reply With Quote
Old 04-14-2008, 05:37 PM   #48
cyborg
Potius Sero Quam Numquam
 
cyborg's Avatar
 
Joined: Jun 2004
Location: Pacific NorthWet
Oddometer: 4,978
Quote:
Originally Posted by mcmann
Great Job. I had to further modify my pipes to make neighborhood friendly.
I extended the inside copper reducer with a 45 degree Street Elbow & added a reverse 1" to 3/4" Copper reducer to the end of the pipe.

This put it back to stock sound and works great with stock lean jetting.
mcmann, that's getting to be quite the plumbers job! but I'll bet it does quiet it down well and you still get your spark arrestor screen.

reconsmr, the drive-by test will take more setup in my area since I'll have to find a quiet enough stretch of deserted pavement and have a second observer to watch the meter while one rides the bike by at WOT! That one may have to wait a bit, and it needs to stop raining long enough to do it!

Oh, and thanks PowerCell
cyborg is offline   Reply With Quote
Old 04-14-2008, 05:55 PM   #49
Katoomer
Silver Surfer
 
Katoomer's Avatar
 
Joined: Nov 2002
Location: Eagle River, Alaska
Oddometer: 1,477
I'm with Powercell. I love my TI FMFs. They sound awesome.....not too loud for me or the neighbors.

The 950 motor deserves to make the music it was born to make.
Katoomer is offline   Reply With Quote
Old 04-14-2008, 06:10 PM   #50
cyborg
Potius Sero Quam Numquam
 
cyborg's Avatar
 
Joined: Jun 2004
Location: Pacific NorthWet
Oddometer: 4,978
Quote:
Originally Posted by Katoomer
I'm with Powercell. I love my TI FMFs. They sound awesome.....not too loud for me or the neighbors.

The 950 motor deserves to make the music it was born to make.
That's what the Harley folks say about their straight pipes too.

The new saying: Loud Pipes Lose Rights!

I'd like to get a lower but quieter rumble out of the bike. Dunno if that's possible.
cyborg is offline   Reply With Quote
Old 04-14-2008, 10:38 PM   #51
tahoeacr
Beastly Adventurer
 
tahoeacr's Avatar
 
Joined: Jan 2007
Location: Lake Tahoe
Oddometer: 2,210
Cyborg,
Good work. If you want those dyno tested send em to me and I'll through it in on the next set of runs. Then I'll send them out to whoever buys them(or return them to you). If they will fit my cf muffler I'll take them. It's LOUD. My guess is they will make more hp than the fmf inserts. But probably not more than 1-2.
On another note I'm caving in and buying a power commander to tune my bike for the 2-1 I made. Still e-mailing tuneboy with no response. Last tank with stock gearing in more wind than I could ride in(guess 60+) I got 48mpg at 3-4K some up to 5k to fight the wind.
tahoeacr is offline   Reply With Quote
Old 04-15-2008, 07:28 AM   #52
cyborg
Potius Sero Quam Numquam
 
cyborg's Avatar
 
Joined: Jun 2004
Location: Pacific NorthWet
Oddometer: 4,978
Quote:
Originally Posted by tahoeacr
Cyborg,
Good work. If you want those dyno tested send em to me and I'll through it in on the next set of runs. Then I'll send them out to whoever buys them(or return them to you). If they will fit my cf muffler I'll take them. It's LOUD. My guess is they will make more hp than the fmf inserts. But probably not more than 1-2.
On another note I'm caving in and buying a power commander to tune my bike for the 2-1 I made. Still e-mailing tuneboy with no response. Last tank with stock gearing in more wind than I could ride in(guess 60+) I got 48mpg at 3-4K some up to 5k to fight the wind.
tahoeacr, you got it. I'll send them your way for the next round of tests. That Tuneboy no-response thing is pretty bad.
cyborg is offline   Reply With Quote
Old 09-02-2009, 05:04 PM   #53
xdbx
Motorcycle Connoisseur
 
xdbx's Avatar
 
Joined: Nov 2006
Location: Metro-Detroit
Oddometer: 2,493
I just wanted to bump this thread as I think it's got some truly invaluable info in it. I'm working powercell's old chopped FMF's and trying to return them to a usable sound level for USFS use. My FMF's spark arresting screens are not nearly as long as the ones pictured. Infact, the solid part of the pipe ends as soon as the spot welds for the screen start. Extremely odd... but I believe this is where I could make HUGE progress with the copper reducers.

Have any of you had experiences with failure of the copper over time due to heat cycling?
xdbx is offline   Reply With Quote
Old 04-02-2014, 04:13 PM   #54
Yellow Pig
Allergic to Asphalt!
 
Yellow Pig's Avatar
 
Joined: Oct 2004
Location: Thousand Oaks, Ca.
Oddometer: 7,015
Careful withe the dB Dawg there have been reports of it melting in the exhaust.




Husky TE 610 after 15 miles of Hwy.

Another one off a YZ:

__________________
So Many Idiots, So Few Comets!!!!!!!!!
Yellow Pig is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 12:01 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014