[grover]

I can say this... I purchased the mbrp version and it was supposed to be 4db louder. It was at first. Now it's pretty loud compared to the other 850s in my group. I have not been stopped 1 time for it however.

Being stopped and peeving off landowners are two different matters, one dosen't have as much consequences as the other.

-grover

 

[SnowLeopard]

No idea what the big deal is. You "might" save what, 10-14lbs? Are you really that good a rider to notice a 3% weight drop? Have you even tinkered with your clutches to get more torque? Have you checked belt deflection? A lot of tests show no increase in performance. You think you're cool with the mean sounding sled? Meanwhile we are losing trails left and right because of noise issues. I know if I had land that trails were on, I would close them if guys with cans were ripping around at all hours.

12 beer is close to 10 lbs, maybe lose the beer.

 

[2Fast-4U]

First, to be clear, I have NEVER had an aftermarket can on ANY sled I've owned in 40 years and HATE the noise, so I am DEFINITELY NOT the guy who's getting a noise maker to close trails. As far as weight loss, yes, my skills are more than adequate enough to notice a 30 lb difference, 15 from diet, 10 from exhaust and 8 from a belt drive. Maybe you missed the whole point. If the damn thing makes more noise than my factory exhaust, I am NOT interested, but if it is the same, I would spend the $ to change it. Second point is, if the manufacturer/supplier wants to come on this forum and tout a "Quiet" can, then they should be honest enough to respond to emails and questions or test the product and provide accurate and truthful specs. In my 20 years of professional experience, I have have never posted a spec for marketing that I couldn't stand behind and back up with my Engineering test data.

 

[Trippy]

Get off the internet

Buy a muffler with bearings and smile

Urinate on all the trail signs, throw beer cans at the groomers....

Do wheelies in parking lots.....

That's the way this sport is heading

 

[Basketcase889]

Just placed my order. Installing it next week before one of my last trips of the season. I'll take DB readings before and after and post it here with comparison videos.

They didn't want to give me a deal to help their marketing which is lacking. Only reporting my findings to you guys so you have the facts before ordering like I wish I had. Buy me a beer in the future if we ever ride together.

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[MXZEXPRESS]

Thank you for posting this. I'm from Manitoba, but fear this ticket happy thinking we progress west

Ontario does have a decibal law.

 

[MXZEXPRESS]

Under Transport Canada regulations, all new snowmobiles sold in Canada since 1987 are required to meet the current SSCC standards. The Snowmobile Safety and Certification Committee (SSCC) is a non-profit organization interested in safe snowmobiling, and have set the levels as follows:

Current Requirements

(1) The sound pressure level of the snowmobile shall not exceed 73 decibels on the "A" scale (73 dBA) at 15.2 m (50 ft) when traveling at 24 km/h (15 mph), and when tested in accordance with SAE Recommended Practice J1161, "Operational Sound Level Measurement Procedure for Snowmobiles" (APR 2004), except paragraph 7.7 thereof.

(2) The sound pressure level of the snowmobile shall not exceed 78 decibels on the "A" scale (78 dBA) at 15.2 m (50 ft) when accelerating at wide open throttle, and when tested in accordance with SAE Recommended Practice J192, "Maximum Exterior Sound Level for Snowmobiles" MAR 2003 (model year 2012) or MAR 2011 (model year 2013 and up), except paragraph 6.7 thereof.

To determine compliance with the current requirements, a value of 2 dB(A), to allow for variations in test sites, temperature gradients, wind velocity gradients, and test equipment, shall be subtracted from the highest average value recorded in accordance with paragraph 6.4 in the case of SAE J1161, and paragraph 5.2.2 in the case of SAE J192.

btw thats ALL of Canada!!!

 

[Basketcase889]

Oh the anticipation...

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[Trojan366]

it’s called “canticipation”

 

[KrazyCapr]

In this ever battle of our sled weighs less than yours....don't ya think that if an exhaust could be made that was light and yet created the HP/performance the manufacturer wanted and met decibel requirements dont ya think the OEM's would install them stock ?????

Well not Doo, it would be an add on for sure...lol

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[KrazyCapr]

Ontario does have a decibal law.

We have a "if it's not stock it's illegal" law EOD

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[Basketcase889]

So apparently I can't post little videos to show the sound... I'll have to look into that tomorrow.

So!

The sound at idle is definitely deeper. Quite a nice tone. No louder I don't think, just deeper.

The sound through the midrange is very close to stock I think. It's hard to hear exactly as I was running it on a stand and the track hums pretty good.

The sound at 6000rpm and up... this is where I was a bit disappointed. It seemed loud to me. It has the higher pitch sound that I'm used to hearing with cans. I am not sure how much louder than stock it is at WOT because the conditions for testing weren't perfect. Very windy outside and was getting windier as I worked away. So that may have swayed my Db testing for the GGB. It's hard to hear exactly the difference from running it on a stand.

I am leaving tomorrow night to head north for a two day trip. I'll take some videos of the sound while actually riding for a better impression. If I find it's too loud, it'll be coming right back off and will be for sale.

As far as decibel readings, notice the max and averages. These are at roughly 12-15' away on the clutch side.

THIS IS THE STOCK CAN

At idle:

Revving up to 6200rpm or so:

THIS IS THE GGB

At idle:

Revving up to 6200rpm or so:

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[Trippy]

Any aftermarket can is louder than stock.
Don't let any manufacture tell you different.
Could have spent the money elsewhere IMHO

 

[Basketcase889]

Any aftermarket can is louder than stock.
Don't let any manufacture tell you different.
Could have spent the money elsewhere IMHO

I know it would be louder. It just sounds louder then they described. Im not convinced yet until I get it on the snow tomorrow though. We'll see then.

If its obnoxious, it will be sold. Im ok with slightly louder and a different tone, which is how they market it. We will see.

 

[MXZEXPRESS]

I know it would be louder. It just sounds louder then they described. Im not convinced yet until I get it on the snow tomorrow though. We'll see then.

If its obnoxious, it will be sold. Im ok with slightly louder and a different tone, which is how they market it. We will see.

Good luck....i think you are gonna be advertising a used can in the future

 

[Basketcase889]

Good luck....i think you are gonna be advertising a used can in the future

I knew that going into this. I've talked with multiple people about this can and they were interested in the sound, as was I. So I bought it to test and finally get some answers knowing it may be too much.

It sounds awesome! Just unsure how loud it will be for trail riding locally.

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[MXZEXPRESS]

I knew that going into this. I've talked with multiple people about this can and they were interested in the sound, as was I. So I bought it to test and finally get some answers knowing it may be too much.

It sounds awesome! Just unsure how loud it will be for trail riding locally.

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I dont know if you have ever saw this posted on here but something for you to compare to

Under Transport Canada regulations, all new snowmobiles sold in Canada since 1987 are required to meet the current SSCC standards. The Snowmobile Safety and Certification Committee (SSCC) is a non-profit organization interested in safe snowmobiling, and have set the levels as follows:

Current Requirements

(1) The sound pressure level of the snowmobile shall not exceed 73 decibels on the "A" scale (73 dBA) at 15.2 m (50 ft) when traveling at 24 km/h (15 mph), and when tested in accordance with SAE Recommended Practice J1161, "Operational Sound Level Measurement Procedure for Snowmobiles" (APR 2004), except paragraph 7.7 thereof.

(2) The sound pressure level of the snowmobile shall not exceed 78 decibels on the "A" scale (78 dBA) at 15.2 m (50 ft) when accelerating at wide open throttle, and when tested in accordance with SAE Recommended Practice J192, "Maximum Exterior Sound Level for Snowmobiles" MAR 2003 (model year 2012) or MAR 2011 (model year 2013 and up), except paragraph 6.7 thereof.

To determine compliance with the current requirements, a value of 2 dB(A), to allow for variations in test sites, temperature gradients, wind velocity gradients, and test equipment, shall be subtracted from the highest average value recorded in accordance with paragraph 6.4 in the case of SAE J1161, and paragraph 5.2.2 in the case of SAE J192.

 

[Basketcase889]

I did yes. Neither of these comply to my tests because they were done on a windy day (no baseline 0 test possible) and from 15ft away.

I did do one test about 50ft away for the stock exhaust at idle and the average was 80db. Which makes the stock exhaust illegal?

I'm sure the numbers are swayed from the wind, I was more using the tester to see the difference between the two
Tests, not the numbers themselves exactly.

From what I've seen, the GGB was roughly 5db louder at idle, and 10db louder at over 6000rpm. Unless the wind brought up the base level dB which I didn't think to test at the time.

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[Killer-Beez]

Michigan's Db limit is 88db with the meter set approx 15 ft away, 4ft high pointed down to the center of the sled on the exhaust side, the reading is taken at 3800-4000rpms with the sled in a stationary position.
Our group tested several of our sleds. Poos,doos and cats. 600s and 800s various can brands.
Only 1 came close to passing, and it failed. An older 600zr thumper was just under the limit with its stock muff.

Taint no such thing as a quiet can, even beer cans are loud,,,,,,,buuusssccchhh

 

[Basketcase889]

Ya my stock can wouldn't pass that test. But I think a lot has to do with the surrounding noise and weather and such. Track noise alone when spinning on a stand would probably be close to that noise.

Hard for me to get actual accurate readings when it's outside.

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