True Duals Installed...SWEET!
Outstanding HDF Member
Joined: Jan 2007
Posts: 2,598
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From: Naples FL / Pine TWP PA
You are correct I forgot about that.
Cruiser
Joined: Aug 2007
Posts: 123
Likes: 0
From: NW PA
Did you notice a drop in your low end torque when you went to the fulsac duals??/
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Cruiser
Joined: Oct 2008
Posts: 111
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From: Perry Hall, MD
Looks like I will be ordering a new set of mufflers ASAP.
Thanks for the info...all of you.
Cruiser
Joined: Aug 2007
Posts: 123
Likes: 0
From: NW PA
Got V&H True Dual headpipes installed on my '08 FLHTC. Stuck with the stock HD mufflers...for now. Gotta say, it sounds pretty sweet. 
I noticed it runs just fine...no change done to ECM. My local dealer had warned me there would be some sputtering, mis-firing, etc without a new download. Bad info?
I noticed it runs just fine...no change done to ECM. My local dealer had warned me there would be some sputtering, mis-firing, etc without a new download. Bad info?
I have a almost brand new set of Vance & Hines Classics that have 100 miles on them I bought for my 2007 Ultra,,, I loved them... Wife said they were to loud !!!!..... She Won and I put on SE Touring mufflers.... If interested PM me and we can talk price... I am located over in Penna just north of Pittsburgh...
Outstanding HDF Member
Joined: Jul 2007
Posts: 2,609
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From: Indy area
I don't know exactly what was done when with the mufflers, but from '07 'til now, the left side is an open chamber with some insulation screened-in around the perimeter. The outlet is a pipe maybe 8" long, closed on the inner end (folded over) and with about a dozen pea-sized holes punched/drilled into it.
At idle, the flow is different side-to-side with the prior touring exhaust as witnessed during warmup from a cold start on a cold morning, if no other way. At any time at (not hot) idle you can seal off the left muffler with the palm of your hand with little effect on the engine (mainly affecting the sound). Doing so on the right quickly chokes down the engine.
I surmise that even though a hand a few inches behind the muffler feels rather like the flow is the same at idle, once the gases get moving "for real" the left muffler falls behind the right in flow capability. It certainly differs in flow qualities over various rpm.
At idle, the flow is different side-to-side with the prior touring exhaust as witnessed during warmup from a cold start on a cold morning, if no other way. At any time at (not hot) idle you can seal off the left muffler with the palm of your hand with little effect on the engine (mainly affecting the sound). Doing so on the right quickly chokes down the engine.
I surmise that even though a hand a few inches behind the muffler feels rather like the flow is the same at idle, once the gases get moving "for real" the left muffler falls behind the right in flow capability. It certainly differs in flow qualities over various rpm.
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Cruiser
Joined: Oct 2008
Posts: 111
Likes: 0
From: Perry Hall, MD
I don't know exactly what was done when with the mufflers, but from '07 'til now, the left side is an open chamber with some insulation screened-in around the perimeter. The outlet is a pipe maybe 8" long, closed on the inner end (folded over) and with about a dozen pea-sized holes punched/drilled into it.
At idle, the flow is different side-to-side with the prior touring exhaust as witnessed during warmup from a cold start on a cold morning, if no other way. At any time at (not hot) idle you can seal off the left muffler with the palm of your hand with little effect on the engine (mainly affecting the sound). Doing so on the right quickly chokes down the engine.
I surmise that even though a hand a few inches behind the muffler feels rather like the flow is the same at idle, once the gases get moving "for real" the left muffler falls behind the right in flow capability. It certainly differs in flow qualities over various rpm.
At idle, the flow is different side-to-side with the prior touring exhaust as witnessed during warmup from a cold start on a cold morning, if no other way. At any time at (not hot) idle you can seal off the left muffler with the palm of your hand with little effect on the engine (mainly affecting the sound). Doing so on the right quickly chokes down the engine.
I surmise that even though a hand a few inches behind the muffler feels rather like the flow is the same at idle, once the gases get moving "for real" the left muffler falls behind the right in flow capability. It certainly differs in flow qualities over various rpm.
Once again, thanks for all the valuable info.
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slimjim1976
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Apr 22, 2014 08:16 AM
