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HarleyTechTalk

Technical Forums => Milwaukee-Eight => Topic started by: brettski99 on March 30, 2019, 10:01:06 AM

Title: S&S MK45 with header on 124 performance/ sound clips?
Post by: brettski99 on 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.
Title: Re: S&S MK45 with header on 124 performance/ sound clips?
Post by: joe_lyons on March 30, 2019, 10:05:51 AM
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.
Title: Re: S&S MK45 with header on 124 performance/ sound clips?
Post by: Don D on March 30, 2019, 11:02:18 AM
Joe how about the DB reducer, is that left in?
Title: Re: S&S MK45 with header on 124 performance/ sound clips?
Post by: joe_lyons on March 31, 2019, 06:34:11 AM
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.
Title: Re: S&S MK45 with header on 124 performance/ sound clips?
Post by: HD/Wrench on April 01, 2019, 07:52:12 AM
https://www.facebook.com/559176144113934/videos/1891510004213868/


(https://farm2.staticflickr.com/1735/42501728231_336a2d9b06_h.jpg) (https://flic.kr/p/27KJt4M)2018 cvo 117 475 (https://flic.kr/p/27KJt4M) by GMR Performance (https://www.flickr.com/photos/146449314@N07/), 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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