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Old 03-23-2008, 08:37 PM   #16
950TRANSALP
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Laugh +1 on FMF too loud and 2 into 1 !

I ran the old silver FMF Q's long enough to need a repack , repacked with FMF packing , stainless and 'glass . They got even louder , so sold them and bought the new black Q2 and they were even more anoying . Sold those and installed a single Jardine with a noise reducer and was amazed to loose 6lb. and gain lots of low end (wheelie popin ) power , even at 6,230ft. . Fullpower al the way to redline too. Much more acceptable sound till you wring it out .
K.B.
Funny thing I have a Q2 on my XR and it's quieter than a Briggs and Straten . I called FMF and was told they have never heard of this issue !
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Old 03-23-2008, 08:41 PM   #17
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Tools needed and One hour later your done.




Sorry I just learned how to post pictures tonight but you should be able to get the picture. I got the bits from Harbor Freight and the Step Bit to Drill holes and a standard large Flathead to use as a chisel; I also had a small magnet light that I used until no more pieces come out and your done, takes around 20 minutes each--- Just for the sound I drilled three equal size holes--- if you look in the last two pictures to give it a bit more raspy sound. Ater I was done you could look and see daylight through these three hole.

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Old 03-24-2008, 11:36 AM   #18
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There must be some variation in the sound output of new FMF's. Mine only seem loud when I am at wide open throttle....but then everything gets lout up there. They certainely sound a lot quieter then all the Akra's I have heard as and quieter then the Neptunes. I would like to go to something a little throatier though.
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Old 03-24-2008, 03:49 PM   #19
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I went with the remus racing exhaust. They have a silencer you can slip in to quite them down. I thought all the new FMF cans were 96 db. or less for USFS. But then again 96 db. is still loud.
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Old 03-24-2008, 04:27 PM   #20
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96 db. AMA test is at 50% throttle, meaningless at WOT.
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Old 03-24-2008, 05:56 PM   #21
cyborg
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I want to quiet down my 990S with the black "KTM" FMF Q4's. Just a bit too loud for warming up in my quiet neighborhood. I like the better response from the FMF's but I would be happier with a lower throatier rumble of lower volume. The stock cans had a weird sound to them I don't particularly like.

Interested in that you guys come up with. The DB DAWG's look interesting, but I think you would have to replace the FMF USFS spark screen?
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Old 03-24-2008, 06:03 PM   #22
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Hey big bear,

Did you feel improvements on heat and performance, and the sound its different now?
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Old 03-24-2008, 07:08 PM   #23
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My Q's are very quite

I have had my FMF Q's from the first day and several thousand miles later the are still much more quite than the factory pipes. All that was done to them was I took them apart and polished them prior to putting them on.
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Old 03-24-2008, 07:56 PM   #24
The Big Bear
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Raspy sound

Dropped the Heat considerable and added a Raspy sound when I drilled the 3 extra holes.

I live in a gated community and the neighbors hate hearing my Indian Chief with my Straight Pipes start up every morning at 5:00 am

They all love my new commuter the KTM.

They still weigh a ton though.

But then again they do act like bumpers when you crash.

It is not hard at all to de-cat them following the above method.
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Old 03-24-2008, 08:15 PM   #25
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Ditto on the copper reducer - A cheap (less than $6.00 total) and easy (10 minute installation) to reduce sound of the FMFs.

Probably not necessary, but I drilled and safety wired the end of the copper pipe to the spark arrestor pipe.


Quote:
Originally Posted by mcmann
I made my own reducer baffles with 1" X 3/4" copper reducers - - - it actually made my 950 more powerful (stock jetting).
Slide the 1" side over the spark arrester screen.
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Old 03-24-2008, 08:30 PM   #26
cyborg
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Quote:
Originally Posted by oio
Ditto on the copper reducer - A cheap (less than $6.00 total) and easy (10 minute installation) to reduce sound of the FMFs.

Probably not necessary, but I drilled and safety wired the end of the copper pipe to the spark arrestor pipe.
How much did it seem to reduce the noise level?
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Old 03-25-2008, 05:18 AM   #27
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The Big Bear comes to the rescue.

Need to have those pics added to the sticky up top.

DW
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Old 03-25-2008, 07:41 AM   #28
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Quote:
Originally Posted by cyborg
How much did it seem to reduce the noise level?
No precise before and after measures of reduction.

Seat of Pants -- For me at least, it was enough to make it worth the time and effort. It is also easily reversable.

You just have to try it yourself to see if it works for you.
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Old 03-25-2008, 09:24 AM   #29
cyborg
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Quote:
Originally Posted by oio
No precise before and after measures of reduction.

Seat of Pants -- For me at least, it was enough to make it worth the time and effort. It is also easily reversable.

You just have to try it yourself to see if it works for you.
Thanks and will do. Certainly easy enough to try. I do have a sound meter, so maybe I'll do a before and after test.

I'll also do the bark test. The louder my bikes are the louder my Jack Russell terrier barks! Quite the symphony as I depart in the morning...
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Old 03-25-2008, 02:13 PM   #30
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Quote:
Originally Posted by cyborg
Thanks and will do. Certainly easy enough to try. I do have a sound meter, so maybe I'll do a before and after test.

I'll also do the bark test. The louder my bikes are the louder my Jack Russell terrier barks! Quite the symphony as I depart in the morning...
Looking forward to seeing the before and after numbers.
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