2011 FXDC slip ons

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Oct 11, 2010 | 08:52 PM

johnwyz

Thread Starter

Tourer

Joined: Sep 2010

Posts: 315

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From: Omaha, NE

2011 FXDC slip ons

Just swapped the mufflers on my Super Glide and was worried about how it would run after. I went with Cycle Shack ms129's and not only does it sound mean, but it runs just fine. Is there any potential problem to just riding without retuning.

Oct 11, 2010 | 09:19 PM

nevil

Seasoned HDF Member

Joined: Jul 2008

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From: southeast PA

You should be fine. Retuning and/or fuel management would be needed if you changed your intake. I'm not sure if it's even possible to tune a bike with the stock a/c.

Oct 12, 2010 | 08:14 AM

joflewbyu2

Road Master

Joined: Apr 2010

Posts: 795

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Quote:

Originally Posted by johnwyz

Those are just about the most free flowing muffler there is. When I spoke to the HD tech, he stated he would do the Stage 1 recalibration and Heavy Breather intake to compliment them. WoW !! He was right. The bike ran much better in the mid to upper range. I added the Xieds for enriching the range I mostly ride at in closed loop to keep it cool. Did not want to get crazy with cost and am very happy. BTW, I sold the Cycleshacks as they were way too loud for my tast and got the pre 06 SE slip on mufflers that have more of a deeper and quieter tone.