True duals
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Road Captain
Joined: Feb 2012
Posts: 525
Likes: 1
From: Oklahoma
True duals
Should installing duals make a big difference in exhaust volume when using the same slip ons that was used on stock head pipe? How bout running temp. I just installed a set on my 09 sg and the exhaust is way louder and seems to be hotter. I know.....probably a dumb question but keep in mind I'm a previous wing owner and didn't deal with exhaust. Only fancy lights and gizmos 
Ultimate HDF Member
Joined: Aug 2007
Posts: 9,486
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From: Hico, TX (once home to Billy the Kid)
I believe one side's internals are different from the other.
I purchased a set of head pipes and then a set of B&E mufflers.
http://www.superflowmufflers.com/
Then I got a dyno tune cause I don't like playing with stuff.
I purchased a set of head pipes and then a set of B&E mufflers.
http://www.superflowmufflers.com/
Then I got a dyno tune cause I don't like playing with stuff.
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Road Captain
Joined: Feb 2012
Posts: 525
Likes: 1
From: Oklahoma
Didn't mention in original thread that the pipes are arlen ness duals and the slip ons are v&h twin slash. Running a pc-v with a map from fuelmoto. Sorry about the double post.
Last edited by Armstronges; May 13, 2012 at 06:09 PM.
Tourer
Joined: Jan 2012
Posts: 419
Likes: 60
From: Central IL
True duals are louder than the stock headpipe when comparing with the same slipons. Hotter? Could be that you're running leaner now with the increased exhaust flow that true duals provide. Contact Kieth at FM and he will send you a map for your true duals setup. I think you'll find that the new map is richer than a similar map for stock headpipe.
Club Member
Joined: Jun 2007
Posts: 45,429
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From: Bedford UK
With your stock pipes the exhaust from each cylinder is divided between the two mufflers. With TDs the exhaust from one cylinder goes out of only one muffler, which is why your bike is noisier.
Road Master
Joined: Jul 2007
Posts: 914
Likes: 1
From: Republic of Texas
Not sure I understand the logic. With stock pipes the exhaust is divided between two mufflers. With TDs, the exhaust is STILL divided between the same two mufflers.
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Extreme HDF Member
Joined: Dec 2010
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From: Badlands of ND
According to the dealer, no. I was looking into this as an option but decided to get some better flowing slip ons.
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From: Pacific Northwest
I don't speak Texan but maybe this will help: The two cylinders on a stock system SHARE both exhausts. On a TD system each cylinder flows through it's own exhaust pipe and muffler.
OP: you may need a slight re-map on your PC-V to adjust for any increased flow from your new TD system.
OP: you may need a slight re-map on your PC-V to adjust for any increased flow from your new TD system.
Club Member
Joined: Jun 2007
Posts: 45,429
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From: Bedford UK
I don't speak Texan but maybe this will help: The two cylinders on a stock system SHARE both exhausts. On a TD system each cylinder flows through it's own exhaust pipe and muffler.
OP: you may need a slight re-map on your PC-V to adjust for any increased flow from your new TD system.
OP: you may need a slight re-map on your PC-V to adjust for any increased flow from your new TD system.
To revise those words slightly: each cylinder on a stock system uses both mufflers. On a TD system each cylinder flows through only one muffler.