For those of you with aftermarket silencers, what brand do you have and did you lose any horsepower with its addition? I have heard that some people lose power when adding a silencer. Is this true/possible?

hmmmm, lose power?? I thought if anything you GAIN hp, but I actually thought that the silencer had nothing to do w/ power, just losing weight, and making the sound better/different. I guess it would be possible to lose power, but why would a company create something like that?? I had a superlite can, sounded nice, but then I got a SLP single pipe and can off a guy used for very cheap.

I had an SPX silencer on my 670. Sounded great, sled seemed to be quicker, but most of all it sounded alot better than stock.

Some silencers can lose power, because they change the backpressure to the engine. Its my opinion that if there is a loss it is miniscule. Silencers are mainly for changing engine sound (read: noisier) and for losing some weight up front.

I tried a B&B on my '99 mxz 600 for a brief time. No faster and the noise drove me crazy, took it off and sold it.

If your into a mean loud sound go for it, i got a B&B and its sound ALOT better than the stock suitcase, and i didint lose power, if anything i got a little better throttle response or so it seems, but there is no power boost with it, just get it fot the sound.

go with the b&b makes more power and sounds good

I run Dyno-Ports. They sound killer and most likely are going to get me a few fines. It's my owe to all the LOUD HD riders!

:hallo1:

You only sound like your going faster, I have a B&B on my F3, it does make servicing the chain case and oil pump much easier without that suitcase in the way.

Originally posted by Bartman@Oct 21 2002, 08:45 PM
You only sound like your going faster, I have a B&B on my F3, it does make servicing the chain case and oil pump much easier without that suitcase in the way.
I found that Chaincase access was much easier the the B&B as well.

The stock silencer on my FZ was freakin HUGE, you almost need a crane to get the thing out.lol

I bought a used B&B trail canister from a guy in the US for $75 and the thing sounds AWESOME, I used a musical sound meter and it is actually 1.4 db quieter than stock at idle.

Has a real nasty bark at higher rpm though.

I can't wait for the snow!

DP

I'm running the B&B muffler on my '97 Mach 1 and gained 5 h.p. and close to 3 lbs.-ft. of torque compared to stock muffler with no other changes. This was on my buddies' Land & Sea dyno. What may have helped is that my motor is ported, heads shaved, squish re-worked and also have V-Force II's, but I was definitely surprised and happy with the results.
Hope this helps !

with some silencers YOU DOO LOOSE HP. I'm in the process of clutching my sled and that was the first thing the guy asked. What type of silencer do you have? DYNOPORT. Good your all set, no loss in HP there.

Buddy just added the B&B Eliminator RACE and sounds awesome but going to be to loud specially on the trails. Will get annoying when riding to I bet.

dyno slip ons with v force clutched geared and my new chrome front end

I installed the MBRP trail silencer, I lost pounds but not HP. It's not as loud as the B&B, but still has a good sound. Plus some states are startng to frown on excessive noise.

just my .02


FZ700

I ran a dynoport on a 2001 mxz 600 and it was great. The sound was nice and not too loud, and it felt a little snappier. That could be just me thinking its faster, everybody does it.

SOme silencers help, some don't.

It is the design that makes the difference. A baffled can like the SLP ones will add the most power, but the ones like the MBRP won't as much. The trail MBRP are better, as they have more back pressure to the exhaust

The race ones, and the 3 inot 3 style will hurt the most. They might add some peak HP, but will hurt the bottom end the most.

Originally posted by FZ700@Oct 22 2002, 08:49 PM
I installed the MBRP trail silencer, I lost pounds but not HP. It's not as loud as the B&B, but still has a good sound. Plus some states are startng to frown on excessive noise.

just my .02


FZ700
The B&B canisters are what MBRP calls the ones they make FZ700 you do have a B&B.
Also as for losing lots of back pressure with a can I cannot see it as the pipe on everyones sled has a smaller diameter coming out of the pipe than what goes into the pipe this is what makes your back pressure. The can does affect it a little, but if the pipe is designed correctly the can will not make you lose Back pressure. If the stock can is used to make more back pressure than the sled pipe can product, then you lose Back pressure and HP. It varies from one sled to another. ;)

The silencer pressure has allot to do with backpressure. Doo switched the silencer entirley on 02 on the 800 to gain more back pressure.

Go and buy a noise maker and get some more trails closed then.

That is all you are buying, noise.

Silencers have everything to do with power, I have a MBRP can, and it's sitting on the shelf cause of what it did to my bottom end.

2 strokes do not have the same flow charectoristis of that of a 4 storke. Then need the back preddure. More back pressure, more HP. Look at fullout race pipes, only use 3/4 inch tubing for stinges to send as much of that pulse back into the motor.

For those of you with the MBRP trail silencer, how does it sound compared to stock/MBRP race silencers? Thanks for the replies guys. I am still iffy on purchasing a silencer, I fear losing any bottom end. Can I avoid this at all with any silencer?

I dont know what your riding but i can assure you i didint lose power on my mxz 700 with my B&B Trail can, its not quite as loud as the race can when cruising but when you hammer it, it has the same bark as the race can, i know because my friend has one on his 700 and its no louder than mine when cranked.

800mxz[quote]Look at fullout race pipes, only use 3/4 inch tubing for stinges to send as much of that pulse back into the motor.

Exactly the outlet of the pipe compared to the size of the input side of the pipe is where your backpressure #'s come from the canister should not make that much of a loss in backpressure if the pipe is tuned to make the right backpressure on the motor. This is what I have read in a magazine some where when I find this article again I will post it. But am having trouble finding it through all my magazines from the past 4 years, there is alot. ???

Thanks jwheeler, I am riding the same as you. So obviously you like the sound of your trail silencer. Keep the posts coming.

The silencer is part of that engineered backpressure.

A change of pipe dia after the stinger has nothing to do with back pressre on the pipe, but it will change the vacume effect or the gas evacuaion effect of the exhaust sytem. If the larger dia sitnger pull more air out of the pipe than it should, then that is more fual/air lost.

Originally posted by 800MXZ@Oct 24 2002, 04:47 AM
The silencer is part of that engineered backpressure.

A change of pipe dia after the stinger has nothing to do with back pressre on the pipe, but it will change the vacume effect or the gas evacuaion effect of the exhaust sytem. If the larger dia sitnger pull more air out of the pipe than it should, then that is more fual/air lost.
I am not talking about the size of the output on the silencer the output of the pipe where it joins to the canister is smaller than the input on the engine side thus backpressure. But yes if the output of the canister is larger than stock it will make more vacuum and suck out backpressure. Go on ebay and check out these pipes Item#187103611 on this race sled they are made correctly and have the Backpressure made using the pipe there is no can to make backpressure. I am not saying you don't loose backpressure installing a can. It just is not as bad as you make it out to be 800MXZ and yes if the output on the silencer is to large you will loose backpressure to a vacuum affect. We are both right hear 800mxz. ;)

To mee, I do not like these things at all. Most of them don't do anything other than just make noise. I don't know about where you guys live, but here in Michigan, allot of our trails depend on the clubs getting permission from private land owners to ride on their land.

Many trails over the last 4-5 years many land owners have not allowed the trails to pass thru their property anymore. Noise is a major contrabution to this. While not all of it, but I am sure farmer Bob wants to shut the trail down at 1:00AM when that guy comes thru with that race can.

This is why if I would recomend a can for someone, I would suggest the SLP, Bender style. They are a true design, not a 6" glass pack. They will add no noise, loose the weight, and maybe gain a couple of HP.

Brad Hulling summed it up for me once several years ago:

"If you ain't got to re-jet, it ain't doing anything for ya"

Peace man, I just think we need to look at the bigger picture.

As far as the design, that ebay number came up with nothing. Here is the pipes off of my race sled. They have no silencers at all, but look at the length of the stingers. They are 10" or so out of the cones. Notice your stock pipe doesn't? This is cause it is using the silencer.

800mxz doo you have the trail or race silencer. I want to put the MBRP trail silencer on my new REV800, but if it makes too much noise, i will reconsider this :(

i have the trail silencer. According the the manufacturer MBRP the trail makes more HP than the race, cause it has more back-pressure. Call them, they will tell ya that.

It isn't much louder at all, just a different kind of noinse, like an IndyCar sound.

is the sound nice or bad, is it to loud, is it low or hi pitch. I emailed mbrp trying to get a sound sample, but they don't have them. I don't want to waste 350$ for something I wont like. :hallo4:

I am in the same boat as you jeepster. I don't want to lose money on something that sounds like a vacuum cleaner on steroids. Noise is not an issue where I ride. All of our trails are in deep wooded areas, not privately owned land.

On my sled, theynsound like the factory 98 XC600 and 700s. Just a nice buzz sound

The Postman just delivered my MBRP Trail can for my 2000 MXZ 700 yesterday afternoon.. I do look forward to installing it this weekend along with my Cudney clutch kit and Boyesen reeds..

This sled has been flawless since new and I've been very happy with the stock performance, However, this year I wanted to beef it up just a bit to see what kind of real gains I get for my hard earned coin.

I will report later this season if it was worth it or not...(to me that is) ???

Cheers!

well im not shure if mine is the trail can or the race can but all i do know is that i have tested it on the timming system and radar gans of cosdra and all three runs where quicker and faster thru 750feet. and thats a fact. on 2 runs it was 2mph more and the other one was 1mph.after the pipes warmed up i got the mph faster then the 3 runs with stock can and also dropped almost a sec. of the et. and that is a B&B can and i changed nothing eles to keep the truns consistant all runs where back to back.

Machz69, well thats great news cause i just purchased a B&B race can today for my 00 MXZ 600. Not looking for a hole lot of performance gains just good quality sound. But i'll take any extra HP givin.

Hey Jacked, once you get that set up, you should let us know how it sounds. I have to make a decision: MBRP race, MBRP trail, or DNE?

i have the sno stuff rumble pack on my 2000 mach z sounds good did not lose anything and i love it

So it is a toss up. Some are absolutely sure they have not lost bottom end performance, and some believe they have...hmm. I hope that some people are not discouraging the use of silencers because of noise alone. I am in an area where noise does not matter so a silencer is not a problem. Please give honest opionions/reviews regarding silencers. This response should be independent of some of the current noise issues.

Student i believe u should have enough reviews here now as this is the most replies i have seen concerning a silencer, so id say go for the B&B and u wont be sorry, if you dont like it there is always a little place called EBAY. ;) :D

I have MBRP race cans on both my 01 MXZ 800 X and my 02 MXZ 600 X. I dont think I lost any horsepower but anything is possible. I love the wide open sound though, awesome!!!

MXZonly, That sled is absolutley beautiful. If thats urs u have done an awsome job dressin that up. Just givin a well done.
-Justin-