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quieting down muffler??

Started by se7enty7, December 17, 2004, 10:45:18 PM

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treybrad

haha.. speaking of scooters and exhaust.. I was driving down the road the other day on the bike and was watching this guy on a scooter. We came to a stop light and what did I notice?... why a big Yoshi can on it  :o

Pretty funny. The can was way bigger than my F1s and looked HUGE on the tiny scooter. Sounded pretty neat for a scooter I guess... :dunno:

trey

Gisser

Quote... but I find less people put their turn signals on when I am in their blind spot with louder pipe that without ...

That might be one of the rare occasions when a loud pipe provides a benefit for all its annoying clamor.  Really, though, staying out of the cages blind spot is standard MSF procedure, I'm sure.

I'm reminded of my youth when I rode my GS outside city limits so I could listen to the scream of my new aftermarket pipe.  When I returned home my brother informed he could hear the shriek even though I was testing 4 miles away. :oops:  That was that.

The Buddha

Its hard to do in traffic ... you have to stay a certain distance back from the car in front, and leave too much gap and some chowderhead will move in, leave too less and you may rear end the guy in front if he hits the brakes ... and anyway ... there is the obvious startled look from the cagers that think the room is there for them to shift in...
Cool.
Srinath.
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TeBo

RGR that..  a couple times, A cager would try to take my lane, and I'd have to take the shoulder or squeeze lanes while honking, cuz someone couldn't hear/see my GS, and they couldn't look over their shoulder like they should (70% of cagers have neck problems, and can't look over their shoulder..  that must be it.)  Now with my new muffler just on, they look over their shoulder even though they're not changing lanes, just cuz they hear something rumbling from their side.  

BTW:  When I had a stock muffler on, I leave the house at 3AM, in my condo, where I think it's still loud.  But I've never seen lights flicker on, or people yell at me.  so I'm hoping I'm doin ok..  But I don't warm up nor put my throttle up until I hit the stoplight in the bottom of my building, where no one could hear me.

I agree w/ Srinath.  Better safe and obnoxious, than silent and unseen...

The Buddha

Btw Jacob ... Didn't I send you a 4 inch piece of SS pipe with the new flange ... That will let you slip the stock one back on the same way you have the Wileyco and mid pipe on ... you have the stock one still right ...
I'll send it back with your carbs ... If you dont have it ...
Cool.
Srinath.
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geekonabike

I'm another guy who traded the loud pipes that came with the bike for a stocker.  I do agree that on occasion the loud pipe might alert a driver.  Just like once in a very great while some Rube-Goldberg interpretation of an accident will explain how the poor sap would have been better off without a seatbelt.  But say you're on a highway, your pipe would have to be pretty loud for the car to notice.  I agree you can't stay out of blind spots all the time.  What I've been trying very hard to train myself for, because it's not real natural for me (being a nonagressive type), is to get that left thumb on the horn button.

Even then, like on I-40 running 75mph, I have visions of the SUV hearing my horn while about to change lanes, and overcompensating to get back and flipping over.

Face it, we're doomed.

But for my rides and my neighborhood, I'm keeping the stocker and finding another way to deal with Srinath's scenario to the best extent I can.

FWIW,
Mike D.
2005 EX250 Ninja

The Buddha

OK Thread Hijack in progress ...
Geek ... You have y = mx + b in your title ... Oddly in India that was y = mx + c ... culture differences ...
Cool.
Srinath.
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geekonabike

Quote from: seshadri_srinathOK Thread Hijack in progress ...
Geek ... You have y = mx + b in your title ... Oddly in India that was y = mx + c ... culture differences ...
Cool.
Srinath.

I'm trying to remember putting it there.

I'm also considering a revolution, where calculus books write the equation y=b+mx, or rewrite the point-slope form from
Y-Y1=M(X-X1)
to
Y=Y1+M(X-X1),
with lower cases all around but I thought it would be more obvious like this for the post.  My reasoning is that it looks better like the "linear approximation."  I think it's a losing battle.

Back to the topic:

I'm EXHAUSTED!  HA HA HA HA HA!
2005 EX250 Ninja

se7enty7

Quote from: seshadri_srinathBtw Jacob ... Didn't I send you a 4 inch piece of SS pipe with the new flange ... That will let you slip the stock one back on the same way you have the Wileyco and mid pipe on ... you have the stock one still right ...
I'll send it back with your carbs ... If you dont have it ...
Cool.
Srinath.

huh?

I just got the flange with the pipe welded to it.. no way to put my stock exhaust back on..

The Buddha

I made only ~4 of those, and sent out those on special request ... but no big deal, I have a couple or heck its a 20 cent piece of pipe ... you have the stock one still right ... I'll send it ... should let you run the stocker, and in 5 mins change over to the wileyco ... well when the thing is cold ofcourse ... Yea I am weird like that ...
Cool.
Srinath.
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se7enty7

Quote from: seshadri_srinathI made only ~4 of those, and sent out those on special request ... but no big deal, I have a couple or heck its a 20 cent piece of pipe ... you have the stock one still right ... I'll send it ... should let you run the stocker, and in 5 mins change over to the wileyco ... well when the thing is cold ofcourse ... Yea I am weird like that ...
Cool.
Srinath.

hmm.. that might be a good solution.  If you think you can get the wileyco quieter then awesome...

What I might do, is have to jet my 'stock' carbs (mains are 122.5) for stock muffler airbox, and jet my DJ carbs for the wileyco can and K&N pods



actually.. I can jet my stocks myself... I think.. I mean it's like a car carb?  

it's the DJ carbs I'm not real confident about.  I cleaned them, and adjusted everything (floats, airmix, etc) per DJ instructions and they still run like sh!t.

The Buddha

Well that slipper thing will not go in the wileyco ... You use the stock muffler ... but in a situation where you can swap over ... say you move and later the noise dont matter, or you find out the noise didn't affect anything ... etc ... you swap it back ... It lets you put the stock stuff back on ... and swap to wiley co in 5 mins ...
Jetting ... 125 mains and 40 pilots and 3 turns and 1 #4 under needles ... and the same for slip on or stock pipe with Paper filter in airbox ...
DJ carbs ... ha ha ... that is a shiny POS ... no one seems to have given me any feed back and I hope its not cos the bike didn't run at all ...
Cool.
Srinath.
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se7enty7

Quote from: seshadri_srinathWell that slipper thing will not go in the wileyco ... You use the stock muffler ... but in a situation where you can swap over ... say you move and later the noise dont matter, or you find out the noise didn't affect anything ... etc ... you swap it back ... It lets you put the stock stuff back on ... and swap to wiley co in 5 mins ...
Jetting ... 125 mains and 40 pilots and 3 turns and 1 #4 under needles ... and the same for slip on or stock pipe with Paper filter in airbox ...
DJ carbs ... ha ha ... that is a shiny POS ... no one seems to have given me any feed back and I hope its not cos the bike didn't run at all ...
Cool.
Srinath.

mine runs, but bogs down really bad under about 3k.  over 3k and it's great.

but that means starting out from a stop is... loud.. and annoying... and difficult.. cause you've gotta get the revs way up.

I've played w/ the mixture screw, completely tore them down and rebuilt per DJ instruction.. all at no avail.


The only thing I noticed is that the slides... there are two plugs that you put in each slide but DJ says "Remove one plug for racing or better street performance" and one plug IS removed. I might contact DJ for the missing plug.. see if that helps...

The Buddha

That 1 plug 2 plug thing is a load of crock ... The slide lifts at just about the right speed left as is ... now see if the slide lifts at the stock rate its supposed to and you leave the stock needle there ... a little bit of variation is built in and you most likely will have a bike that runs right ... their needle has a drastic taper, making the mix much more sensitive to slide lift speed ... making for a slide that lifts too fast ... blocking 1 hole and restricting the other = too slow ... blocking one and leaving other open = too fast ... Heck on a stock needle slide combo 1 hole open = faster than ideal ... but you never feel it on the street ... put it on a dyno and those open shut open tests sometimes show a waver in it ... indicating its rather quicker than ideal ... Where I disagree with their whole "Better street performance leave 1 open ..." WTF ... make up your mind ... there is no 2 answers ... if its too fast you have a bike that sorta jerks and falls on its face ... if too slow it will act like its choking and rev up very slowly. There is a narrow range where its right ... 1 plug and 2 plug difference is far to wide and if you are too fast on one you'll most likely end up too slow with both ... I drilled out the plugs in one of the slides that came to me cos it had both and I felt they should be closer to stock but not as big ... Now that's what you are sending me ... the DJ carbs ... Gee thanks ...
Anyway over 3 K is fine but under 3K its bogging ... OK in cold weather is it worse when engine is cold or worse when engine is hot ...
Also if the weather is hot and engine is hot ... how is it and in hot weather with a cold engine how is it ... like we are going to have hot weather for the next 6 months ... OK valid point ... but tell me how the thing is when weather is cold. It might need 40 pilots ... if its worse when engine is cold and improves slightly when engine gets hot.
Cool.
Srinath.
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