True Duels VS Stock Y joint???
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Novice
Joined: Mar 2012
Posts: 21
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From: Hanscom AFB, MA
True Duels VS Stock Y joint???
Hey ya'll just had a few questions. I have the stock headers on my 04 RKC with SE Slipons. It sounds nice has a low deep rumble BUT I get most of the rumble from the right pipe, I know its because the left one is robbed do to the "Y" pipe coming out of the read head.
My question is..
I was thinking about changing out the entire system for true duels, will this increase or decrease the power? I was looking at the Rineharts. I like the way they sound, not too crazy loud but with a deep rumble.
I also ask because I had my sled Dinoed with the SEPST and I still feel like on take offs im still a bit slow (sometimes I feel like the Jetsons mobile) lol. I was told that true duels would give me that extra umph and a nice loud roar when i wanted it. any thoughts.
Also, in the market for the Rinehart true duels anyone know of someone wanting to sell theirs. let me know
thanks
My question is..
I was thinking about changing out the entire system for true duels, will this increase or decrease the power? I was looking at the Rineharts. I like the way they sound, not too crazy loud but with a deep rumble.
I also ask because I had my sled Dinoed with the SEPST and I still feel like on take offs im still a bit slow (sometimes I feel like the Jetsons mobile) lol. I was told that true duels would give me that extra umph and a nice loud roar when i wanted it. any thoughts.
Also, in the market for the Rinehart true duels anyone know of someone wanting to sell theirs. let me know
thanks
Outstanding HDF Member
Joined: Jan 2008
Posts: 3,328
Likes: 15
From: Pacific Northwest
There's a company called Fulsac that makes a kit that replaces the 'Y' pipe on your stock head pipes (making your stock system a true dual). You can then use the Rinehart slip-ons and save a couple of bucks.
Power-wise this is a subject that has been beaten to death. I can only relate to you my direct experience.
The amount of off idle power loss I could actually feel was almost undetectable. The power I picked up everywhere else was dramatic. Especially after a little dyno time.
Had a bud with a new '07 CVO 110 Ultra that couldn't pull away from my near stock 88" SG. He was nearly in tears when I'd repeatedly pull a half a bike length on him right off the line and he could never make up the distance.
My bike was a stock 88", 5 spd., PCIII, Rinehart TD's, Ness Big Sucker.
His bike was a stock 110", SE air cleaner, D&D 2-1 (FatCat) , and tuned via SERT.
Power-wise this is a subject that has been beaten to death. I can only relate to you my direct experience.
The amount of off idle power loss I could actually feel was almost undetectable. The power I picked up everywhere else was dramatic. Especially after a little dyno time.
Had a bud with a new '07 CVO 110 Ultra that couldn't pull away from my near stock 88" SG. He was nearly in tears when I'd repeatedly pull a half a bike length on him right off the line and he could never make up the distance.
My bike was a stock 88", 5 spd., PCIII, Rinehart TD's, Ness Big Sucker.
His bike was a stock 110", SE air cleaner, D&D 2-1 (FatCat) , and tuned via SERT.
Last edited by Leftcoaster; Mar 19, 2012 at 09:49 AM.
There are lots of threads on this, and plenty of debate. I don't think I've ever seen a dyno comparison on a stock or stage I TC88 that shows any loss with Rinehart TDs when compared to a stock system, despite the many claims that true dual systems lose torque at the low rpm range. My experience with the Rinehart TD system is that they make nice gains across the entire power band.
Here's a thread from the engines forum with several dyno charts that show how a Rinehart td system compares to stock exhaust on several different bikes.
https://www.hdforums.com/forum/engin...e-duals-3.html
Here's a thread from the engines forum with several dyno charts that show how a Rinehart td system compares to stock exhaust on several different bikes.
https://www.hdforums.com/forum/engin...e-duals-3.html
Banned
Joined: Feb 2010
Posts: 1,910
Likes: 263
There's a company called Fulsac that makes a kit that replaces the 'Y' pipe on your stock head pipes (making your stock system a true dual). You can then use the Rinehart slip-ons and save a couple of bucks.
Power-wise this is a subject that has been beaten to death. I can only relate to you my direct experience.
The amount of off idle power loss I could actually feel was almost undetectable. The power I picked up everywhere else was dramatic. Especially after a little dyno time.
Had a bud with a new '07 CVO 110 Ultra that couldn't pull away from my near stock 88" SG. He was nearly in tears when I'd repeatedly pull a half a bike length on him right off the line and he could never make up the distance.
My bike was a stock 88", 5 spd., PCIII, Rinehart TD's, Ness Big Sucker.
His bike was a stock 110", SE air cleaner, D&D 2-1 (FatCat) , and tuned via SERT.
Power-wise this is a subject that has been beaten to death. I can only relate to you my direct experience.
The amount of off idle power loss I could actually feel was almost undetectable. The power I picked up everywhere else was dramatic. Especially after a little dyno time.
Had a bud with a new '07 CVO 110 Ultra that couldn't pull away from my near stock 88" SG. He was nearly in tears when I'd repeatedly pull a half a bike length on him right off the line and he could never make up the distance.
My bike was a stock 88", 5 spd., PCIII, Rinehart TD's, Ness Big Sucker.
His bike was a stock 110", SE air cleaner, D&D 2-1 (FatCat) , and tuned via SERT.
Cruiser
Joined: Oct 2010
Posts: 215
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From: quebec canada
true duels vs stock y joint
hi have fullsac on my 08 the biggest benefit is not to have your right leg roasted and little heat on left is not to bad mrfuji
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Outstanding HDF Member
Joined: Jan 2008
Posts: 3,328
Likes: 15
From: Pacific Northwest
Nah, stock '07 CVO 110's were real dogs. That coupled with some too tall gearing only made things worse. His bike was tuned by a well respected tuner in the Portland OR area.
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Club Member
Joined: Jun 2007
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From: Bedford UK
I have used the Fullsac conversion kit and was very pleased with it. It 'cured' the unequal noise from the mufflers, as you would expect! I later used a new set of TD pipes plus slip-ons and was also happy with them, even had the bike tuned on a dyno. More recently I changed to a 2-into-1 and had the bike tuned by the same dyno shop.
On my bike I gained 15% more torque at 3,500rpm. That is a lot on paper and on the road! The TDs had a small drop in the torque curve between 3-4,000rpm. The latest system covers that dip and matches the upper torque curve almost exactly. At peak torque I gained a few and lost 1HP with the 2-into-1, but the gains at 3,500rpm were very significant. My bike is also much smoother running now, so while I enjoyed my two phases of TDs, I enjoy the bike even more now.
On my bike I gained 15% more torque at 3,500rpm. That is a lot on paper and on the road! The TDs had a small drop in the torque curve between 3-4,000rpm. The latest system covers that dip and matches the upper torque curve almost exactly. At peak torque I gained a few and lost 1HP with the 2-into-1, but the gains at 3,500rpm were very significant. My bike is also much smoother running now, so while I enjoyed my two phases of TDs, I enjoy the bike even more now.
