D&D x-cat header and slip-ons.

[838]

How does this system perform in big cube twin cams? What are some good power producing slip on's nowadays (I like loud)?

[rigidthumper]

Depends on how big. We used it on a buds bike a couple years ago, did OK. 2016 FLHX 107 with T-Man 625 cams. With Crusher mufflers, (loud/open) made 122/117, dip @ 2K.
With Crusher Mellow mufflers (quieter/internal plate) , made 126/123, dip mostly gone.
I noticed @ WOT, the volume wasn't much different- at cruise, the Mellows were easier on the ears.

[838]

This would be for my personal 117". It makes 140/136, it has a rush wrath but I've been riding 2-up a lot and the heat of the pipe is right on my wife's leg. Was thinking of trying a 2-1-2 option. I know the fulsac and fuel Moto pipes work, but I like the look of the s&s, chrome werks, and d&d. I didn't know you could still get crushers? I will need black  slip-ons too.

[Deye76]

"I didn't know you could still get crushers?"
Used maybe. There might be a new style, don't know if they are as good as the ones Roland developed.

I'm keeping mine.

[harpwrench]

The primary tubes are pretty much identical with a boss fatcat, down to the merge. 1 5/8" at the head. Maybe kinda small if you wanna keep the 136hp?

[838]

The primary tubes are pretty much identical with a boss fatcat, down to the merge. 1 5/8" at the head. Maybe kinda small if you wanna keep the 136hp?

Good info. That won't work. Now I wonder if the s&s or chrome werks are up to the task?

Does anybody know which muffler's work with the fullsac cores?

[Don D]

Stock or CVO

[Clayton24]

Have you looked into vance & hines power duals ?

[harpwrench]

Rush has the "high output" duals with hidden crossover like s&s/kromewerks too, and they're ceramic coated.

[838]

Rush has the "high output" duals with hidden crossover like s&s/kromewerks too, and they're ceramic coated.

Looks to be discontinued... maybe I could get the same through Dragos?

What about the s&s power tune duals, are they up to the task on a big cube motor???

[harpwrench]

I don't imagine that it would match the wrath:)

[harpwrench]

Biggest one I could find on here with the power tune duals is a 113.
Mufflers maybe holding it back some
http://harleytechtalk.com/htt/index.php/topic,104722.msg1239428.html#msg1239428

I can tell you for a fact that not all dynos report the same numbers, or even the same dyno on different days, my experience with that

[jsachs1]

Call Drago. He's getting back in the header business.
John

[60Gunner]

Khromewerks or Rush.

[kd]

Frank's Dragula 1 with the slow wide curved exit on the rear cylinder (like D&D and Rush) really performs on my 120 with a 2.5" baffle.  Some compare it in most ways to the Rush pipe.  I have noticed that the headers on the pipes that consistently perform well in a broad pool of builds use that design feature.  I would be interested in hearing what the tuners have noticed in header design.

The Burns pipe 3"  baffle is an absolute killer pipe too. It's lacking a bit the on left side for street use in a heavy platform Bike. Not by too much though. (baffle size?) It can be fixed and we have seen that here.

Here's a comparison.  Blue is the Dragula 1

https://harleytechtalk.com/htt/index.php/topic,99409.msg1162057.html#msg1162057