Fullsac MX Header pipe
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Joined: Sep 2010
Posts: 75
Likes: 7
even exhaust
It is a noticeable difference, but not close to even. I think since the right muffler inlet is so much larger than the left, and shorter distance in pipe, it will never be even. With that said, I would do the Fullsac header all over again, or a 2:1.
Grand HDF Member
Joined: Oct 2009
Posts: 3,932
Likes: 882
From: SOON TO BE A SAFE AMERICA
DEPENDS ON WHAT FORUM YOU'RE ON.
IF you go on the CVOHARLEY Forum, 80-90% of the folks over there run Fullsac headers, CVO replacement baffles and screens.
That is where Fullsac really got popular first.
For the money, proven performance, ease of install, killer customer service, free dynoed proven maps, nothing even comes close!!!
YB
Seasoned HDF Member
Joined: Nov 2016
Posts: 6,088
Likes: 6,447
From: East TN
Steve, owner of Fullsac started developing the M8 head pipe right away. He however was not happy with gains. He would not release his head pipe until he could show good gains on a stock motor, especially in torque in the RPM most people ride. It took Steve until August of 17 to release the MX headpipe, because he wanted to make sure he had a good product.
I have been using his head pipes since 09, between my wife and I that 7 head pipes now, counting the MX. I waited for the Fullsac rather than get one of the other that were available earlier.
My 13 CVO King is 138.5 HP and 140 Troque on a Fullsac head pipe and mufflers
Road Master
Joined: Jul 2015
Posts: 821
Likes: 54
From: Tomball, Tx.
When you guys are talking about Fullsac mufflers, what are you meaning? All I'm seeing are factory mufflers that have been re-baffled. Is that what your referring to? I'm still on the hunt for what I'm doing with mine. 2-1, 2-2, Bassani, D&D, FM or Fullsac, Dragos and I'm wanting black.
Seasoned HDF Member
Joined: Nov 2016
Posts: 6,088
Likes: 6,447
From: East TN
When you guys are talking about Fullsac mufflers, what are you meaning? All I'm seeing are factory mufflers that have been re-baffled. Is that what your referring to? I'm still on the hunt for what I'm doing with mine. 2-1, 2-2, Bassani, D&D, FM or Fullsac, Dragos and I'm wanting black.
Grand HDF Member
Joined: Oct 2009
Posts: 3,932
Likes: 882
From: SOON TO BE A SAFE AMERICA
What it really does that you are missing is make more Horsepower and Torque down low where you really need it most and where most folks ride their cycles.
JMHO
YB
Banned
Joined: Mar 2008
Posts: 1,967
Likes: 206
From: Jax FL
S&S makes such a header. Has the same size outlets. So you can run any muff from the twin cam era.
https://www.sscycle.com/products/ssp...dels---chrome/
https://www.sscycle.com/products/ssp...dels---chrome/
which makes them a 'bargain' until you read Steve's diatribes, and realize:
-it prolly has the O2 adapter which make them read AFR poorly
-they have no crossover (does the M8 lose as much torque with a true dual?)
-the front head pipe is WAY longer than the rear, so it may be unbalanced.
shoulda kept my 103
to me, part of the "HD tax" and part of the "fun" is shopping forums or CL and getting DEALS on stuff, but i suspect it will be a while before used M8 Off Road pipes are cheap, though......
Last edited by 04ctd; Oct 29, 2017 at 08:59 PM.
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Seasoned HDF Member
Joined: Nov 2016
Posts: 6,088
Likes: 6,447
From: East TN
That said, it seem more Harley exhaust buyers are more concerned about sound than actually performance in the RPM range where the bike is normally ridden.
Me, I shop for the best performance. Been running Fullsac stuff for years, because it work and out performs most the big names stuff.