qwerser
Junior Member
chop till you drop
Posts: 169
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Exhaust
Sept 17, 2011 7:54:23 GMT -6
Post by qwerser on Sept 17, 2011 7:54:23 GMT -6
What are all the options or modifying your exhaust? I was thinking about just taking off the two mufflers and calling it a day; leaving the exhaust stopping right under the seat. I did this before with my old 600cc Yamaha and it worked fine. I'm just wondering if there would be back pressure issues, or carb issues even? Also what have other people done for aftermarket mufflers? And combining the two into one.
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Exhaust
Sept 17, 2011 17:33:07 GMT -6
Post by eaglerider on Sept 17, 2011 17:33:07 GMT -6
Check Photo Gallery for pics & ideas.
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qwerser
Junior Member
chop till you drop
Posts: 169
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Exhaust
Sept 22, 2011 8:58:01 GMT -6
Post by qwerser on Sept 22, 2011 8:58:01 GMT -6
I ended up just taking the mufflers off and leaving it at that. They sound mean and I'm not experiencing any downgrade in performance due to lower back pressure, so looks like they're staying off. I also plugged up the EGR hoses and its not popping as bad as it was when I downshift. This plus pod filters are the meanest sounding thing on the street. The DOHC makes the pipes pop at the same time and at night if I really get high enough RPM you can SEE them pop a little. I love this bike. Is there any way to make these things shoot fire more with out messing with air fuel ratios?
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eman2282
Junior Member
"Life's a Journey, not a destination"
Posts: 235
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Exhaust
Sept 25, 2011 15:58:44 GMT -6
Post by eman2282 on Sept 25, 2011 15:58:44 GMT -6
I hope you braced the exhaust after removing the mufflers, the headers will crack underneath the heat shield you most likely won't notice it until its too late. I did the same thing a few years ago and didn't support the exhaust at all. Gravity + Heat equaled extremely cracked heads the whole system nearly fell off while going down the road. I recently picked up a failed bobber project from my friend to use as a parts bike and told him he should have supported the exhaust. He insisted it was fine, once I got it home and started disassembling the bike I found the headers were in fact cracked.
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qwerser
Junior Member
chop till you drop
Posts: 169
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Exhaust
Sept 27, 2011 11:13:30 GMT -6
Post by qwerser on Sept 27, 2011 11:13:30 GMT -6
Woops. I'll get a brace welded to the extension when I get it. I'm hoping on getting the headers extended to just past the passenger foot peg. On another note, is the popping from taking off the air valve from the head and not plugging it up do damage to the bike? Even if I got a filter for both sides?
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Exhaust
Sept 27, 2011 14:46:06 GMT -6
Post by Blaine on Sept 27, 2011 14:46:06 GMT -6
Woops. I'll get a brace welded to the extension when I get it. I'm hoping on getting the headers extended to just past the passenger foot peg. On another note, is the popping from taking off the air valve from the head and not plugging it up do damage to the bike? Even if I got a filter for both sides? They should be plugged off.My bike is a Canadian model and blocked from the factory.
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qwerser
Junior Member
chop till you drop
Posts: 169
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Exhaust
Sept 28, 2011 9:56:50 GMT -6
Post by qwerser on Sept 28, 2011 9:56:50 GMT -6
It just sounds like a freakin lion when I downshift though. I love that sound, but I'm afraid that there's damage done when I don't have it plugged up.
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Rob
New Member
Posts: 71
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Exhaust
Oct 28, 2011 8:37:15 GMT -6
Post by Rob on Oct 28, 2011 8:37:15 GMT -6
The Canadian and European models dont have any of that California emissions stuff. Never seen one of those models but if that hosE connection is just bolted on, remove it and make a flat plate to cover them over. Popping is from no back pressure because of no baffles, should only do it on down shifts and letting off the throttle. From the reviews I have read no back pressure doesnt affect these little bikes. But I find them way to loud, for me and the public. Nice turn out and cut profile pipes on ebay for $45 ea.
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Exhaust
Nov 10, 2011 9:47:02 GMT -6
Post by greggronemus on Nov 10, 2011 9:47:02 GMT -6
I cut/pounded out the factory baffles from the stock exhaust so I was left with empty metal "tubes" (be careful if you do this-easy to dent the exhausts from the inside)! Sounded great but too loud and obnoxious after a couple days riding.
I then made new baffles out of perforated metal tubing and the circular end cap from the stock baffles. Wrapped them with leftover baffling matting from aftermarket exhausts from a different bike. They slip right in and are held in with sheet metal screws-sounds great! Not too loud, not too quiet.
They come out easily if I feel like being obnoxious! (pics attached)
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