performance exhaust with stock sound?

[dcoffey48]

Call me weird or old or what ever, but like my bike quiet.  (Especially when warming it up at 6:30 in the morning)

Anyway,  Is there a performance exhaust that I can use in conjunction with Re-jetting that can give me a little boost in performance without increasing the noise much over stock?

Dave.

[DrtRydr23]

I've heard that Yosh's are pretty quiet, but I don't know for sure.

[reminor]

I like mine quiet too. After reading a lot on this forum I myself dropped idea of changing the exhaust can. According to what I read it merely adds 3-5% to the overall performance. So you'd better do rejet as it adds a lot to the warmup / riding capabilities of GS500.

[frankieG]

the yosh i had on my old 89 was more than loud

[Jay_wolf]

My Nexxus sounds like a racebike , 

My bike takes about 20 secs to warm up , then it runs fine ,

The Yoshi's sound Deep and low and very quiet in Compairison

[dgyver]

Only the Yosh with a street baffle are quieter. Not the race. Not sure if the street baffle is even made anymore.

No performance exhaust will be very quiet. It is the sacrifice you make for the performance. The more air/fuel you can move through a motor, the more power it tends to make. A quiet exhaust is generally restrictive so limiting the amount of sound limits the power gain. This does not mean that a noisy exhaust makes more power, like D&D...probably the noisiest and produces the least amount of power. On other bikes, I have been very pleased with M4 for sound and performance. Still free flow through.

[galahs]

Maybe if you could get fabricated a dual muffler system you might be able to have a quiet, free flowing exhaust?


Mate you could always add a K&n drop in filter into your airbox,  rejet the bike a touch without adding a sports exhaust and still get better performance.

Just be aware that adding a K&N Lunchbox filter or pod filters will also increase your bikes intake noise considerably!

[Mk1inCali]

I dunno if I've got the "street" or "race" Yosh full system, but it's (quite a bit) louder than my Ducati with Leo Vince slip-ons/stock airbox.  There's definitely a lot of intake noise from the K&N pod filters on the GS, too.

My friend said he could hear me over a mile away, getting on the freeway one night away from his place, on the GS.  The sound carries pretty darn far, compared to the Ducati's rumble.

http://www.youtube.com/watch?v=NGcvT0EDh9Y

[kml.krk]

the new yoshi slip-on for 04-07 models has low-volume insert. also you could try stock GSXR600 muffler. I had it and it flows better than stock gs500 and is only a tiny bit louder.
cheers
KaMeL

[Chuck]

Maybe if you could get fabricated a dual muffler system you might be able to have a quiet, free flowing exhaust?

You want a Buell:

http://a1264.g.akamai.net/7/1264/1354/ce93730c47ec7b/www.buell.com/en_us/buell_way/buelltech/pdf_1112_2003.pdf

It's kind of like Yamaha's EXUP, but with the bonus of running quietly when you want it to be quiet.

Actually, if someone managed to rig that on a GS, I'd send him a beer.

[dcoffey48]

Thanks for the info.  I understand (at least on a basic level) the relationship between free flowing exhaust coupled with better flowing intake to produce more horsepower.  (make it pump more air... you get more power.  I know that there is a lot more to it than that as well) I was just wondering what my options were should I replace my exhaust system this winter.  I wouldn't replace it just for the performance, but when it needs to be replaced if I can add some performance in the process that would be great.  I just don't want to make it too noisy in the process.  I also noticed that a stock replacement is more expensive than an after-market.

Dave.

[galahs]

Basically the best way to make a 'perfromance exhaust quiet is...

to have large volume muffler cans. The larger the volume the more sound absorbancy material can be shoved in there.

A mild dog-leggewd muffler would also be better than the stocker, but I'm not sure where you'd get one.

The next option as has been mentioned is get a stock pipe off a larger bike. An older GSXR750 can for example.

[OgGy]

the new yoshi slip-on for 04-07 models has low-volume insert.

a friend of mine has a yoshi on his bandit and it has 2 low-volume inserts. They're easily removed (I think you only need a screwdriver) and he can make the bike as loud (or quiet) as he wants. Maybe that's the way to go 

[pbureau69]

the new yoshi slip-on for 04-07 models has low-volume insert. also you could try stock GSXR600 muffler. I had it and it flows better than stock gs500 and is only a tiny bit louder.
cheers
KaMeL

Gixxer 600/750 mufflers have a 4 bolt pattern, how did you couple  it to your Gs500 welded exhaust, I am curious because I have considered this option for my ride and I have not found a "good" way of cutting/welding the back end of the muffler unto a gs500 exhaust port.

[kml.krk]

Gixxer 600/750 mufflers have a 4 bolt pattern, how did you couple  it to your Gs500 welded exhaust, I am curious because I have considered this option for my ride and I have not found a "good" way of cutting/welding the back end of the muffler unto a gs500 exhaust port.

Let me paste the link to the website with pictures. You can see it better that I can explain 
Basically I used custom made flange (4 bolts pattern), cut the pipe in 2 places (behind the collector and before muffler) then you change the angle of the midpipe to make it suit your needs and to get some brake clearance, then you weld midpipe back to the collector and finally weld the flange on the midpipe at the appropriate angle. It propably sound harder to do than it really is.

Anyways here is the link to pictures of my bike: http://bikepics.com/members/kmlkrk/04gs500/
scroll down and you will find the zoomed pictures of the flange and midpipe

good luck
KaMeL

[pbureau69]

yeah well.. guess I skip that idea... I don't weld, don't have a mig/welding machine.... think Ill just spend some cash and get a jardine system, and be done with it. thanks for the info though, nice job you done there.

[galahs]

Speaking of twin exhausts, I'm sure I saw a bike with a can on it yesterday with two outlets 

[BassHz]

Call me weird or old or what ever, but like my bike quiet.  (Especially when warming it up at 6:30 in the morning)

Anyway,  Is there a performance exhaust that I can use in conjunction with Re-jetting that can give me a little boost in performance without increasing the noise much over stock?

Dave.

I'm with you Dave.  Unless I've got a V-Twin or an inline 4, I don't need to hear the engine.  A GS engine doesn't sound so good until you hit the upper RPM range anyway.  I don't care to hear it puttering when cruising or down-shifting and my neighbors don't want to hear it at 11:30 at night either.  One of the PO's modified my bike's stock can by punching through the metal from the rear and I guess digging out the baffling materials.  It is freaking loud, raspy and unrefined.  I don't mind the Formula 1 sound when getting on the highway but otherwise, it's pretty annoying.  Like this only more raspy: http://gstwin.com/video/gstakeoff.wmv

I asked a guy at one of the Suzuki shops in town and he claimed there is absolutely no solution for my problem except for buying a new OEM system or installing a stock system off another GS.   He said he gets requests for systems that sound like mine all the time from other GS500 owners and that I could probably sell it.

Thread Jack:
Anyone open to an even trade for your unmolested stock system?
Anyone know of a sound clip of a GS500 with the Jardine system?
Jardine vs. Vance & Hines?
Do these systems require losing the center stand?
GS500 wiki mentions a Yamaha R6 slip-on option.  Does that mean any slip-on designed for an R6 will work on the GS?

Thanks,
BH

[Jay_wolf]

I think i can answer these

1) A Stock system being one piece is alot of money to ship ,to what its worth , the best idea would be to find a local person ,or just drive to meet them

2) www.Youtube.com    Gs500 Jardine
3) www.youtube.com . And look for both , Jardine and VH
4) I dont have a centrestand , and never have , but i think my pipes (nexxus) would of hit it
5) according to the wiki , its the Pipe Diameter , 52mm or something ,(look it up first) , the r6 pipe happens to be the same , so a slip on designed for the r6 would slide on to gs pipes that have been cut ,  Dax has it on his ,and i personally thing the pipe is WAY to big for the GS
But each to there own , hope this helps 

[galahs]

I made a sound clip of my stock vs Jardine exhaust here:
http://gs500.galahs.com.au/