S&S MK45 with header on 124 performance/ sound clips?

Started by brettski99, March 30, 2019, 10:01:06 AM

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brettski99

March 30, 2019, 10:01:06 AM
Has anyone used the SS MK45 slip ons with an aftermarket header? How was performance and sound as I can't find anything online.
Thanks.

joe_lyons

March 30, 2019, 10:05:51 AM #1
The mk45 mufflers work well with the inserts installed.  Once the inserts are removed there is  a drop and not any gain.  The grand nationals would be a better choice in my opinion now but I like louvered baffles better.
Powerhouse Cycle & Dyno - Performance is our passion 816-425-4901

Don D

March 30, 2019, 11:02:18 AM #2
Joe how about the DB reducer, is that left in?

joe_lyons

March 31, 2019, 06:34:11 AM #3
Quote from: HD Street Performance on March 30, 2019, 11:02:18 AM
Joe how about the DB reducer, is that left in?

With the grand Nationals they are still helpful but not as detrimental if removed.
Powerhouse Cycle & Dyno - Performance is our passion 816-425-4901

HD/Wrench

April 01, 2019, 07:52:12 AM #4
https://www.facebook.com/559176144113934/videos/1891510004213868/


2018 cvo 117 475 by GMR Performance, on Flickr

I ended up pulling one DB to get the  best overall curve I like the GN over the MK myself . I tested both in both out and then left in , then right in with the opposite removed . .  Both out it sucks huge loss of power both in made curve right side great but killed it above 4000
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