+1 w/tibadoe - The claimed loss of "low end" will be imperceptible and the power everywhere else will convert you from the 1500 rpm tractor motor that seems to be what every other rider wants. You'll notice quite a gain from 2500 rpm on which is actually low to mid rpm on a motor that's limited to 5800 rpm.

 

Hmm, I definately noticed the low end pull suffer on my evo motor. I just installed true dual headers. I lost a bit of the grunt on the bottom, 80" motor with cams and some mild head work. HOWEVER, the reason I did this was for the heat factor, and I instantly noticed a difference in the amount of cooking that my legs do, or dont, as the case is now. It also threw my jetting way off, the only change was the head pipes, same mufflers. It also seems to fall off on the top end a bit quicker as well. I also notice it made the bike a few DB louder, which was already on the high side of bearable. May need to look into some new baffles. As we have bike week rocking here in Phoenix, I think I will have it dyno tuned this weekend. Its only $100.00 and I will get a printout.

 

bought my road gluide new (09) and just got around to making some miner changes i did the HD stage I down load w/the SE Heavy breather(forward facing cone filter)and HD SE fatzboy muffler kit.New for 2010.their HDs verison of super traps.keeping in mine that this is a 820lb machine.my low end power is about the same as stock but my mid range on up i can only say this thing hauls *** the torque from about70mph to 105 in 5th to 6th jumps.i did pick up some miner poping on decel but thats it.iam not into super load pipes and these have a deep sound them getting down the road

 

I put a set of Bassani True Duals on my Road king. Lost power, particularly low end, and they were too loud. Very disappointed.

Just my experience.

On my 07 RG I have the new quiet SE mufflers with a factory 103 kit. 105 tque, 85HP. Very happy with it.

 

V&H TD on my 01 RKC no real noticable loss, just but a Stage1 AC and retuned and the engine is very strong all over. Wouldn't go back to my cracked stock system, good peace of mind too.

Been told it's much louder but I didn't see much of a change on the saddle.

 

I have been running Vance and Hines true duals on my bike for many years.

The bike runs cooler.
No heat on my leg.
It sounds deeper (not louder).
I believe the engine is happier.
It looks better.
V&H great fit and heat shields.
Negligible low end torque loss.
Did I mention no heat on my leg?

 

It seems experiences vary with true duals. I tried them on my 89 inch stroked evo motor and liked the sound, proved to myself they work well and didn't detect any change in performance. With my S&S 107 they are just great, with a wide level torque curve.

 

You are so right , I had true duals on an 80" Evo and thought they were great compared to what I took off(stock) , ran them for a while then got a 2-1 Supertrapp put it on and at first didn't really like it , liked the sound on the TD's better and didn't really think that the 2-1 ran that much better. Then I switched back to the TD's ....that didn't last 1 day , I thought they were too loud and no bottom end . I have never ran any aftermarket exhaust other than 2-1's after that experience.

 

I think true duals are overrated and 2-into-1 is not necessary with anything less than a Stage II upgrade. JMO

 

Here is the difference between tru duals and 2:1. All that was changed is the pipes and retuned.