Milwaukee Eight (M8) 2017 and up M8 Air and Liquid Cooled discussion
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New Stage 3

Old Nov 19, 2025 | 03:15 PM
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Default New Stage 3

Got my 21 Street Glide 107 built by Harley, definitely not an all SE build 119. Used a Star Racing 30/30 cam and they tuned on a dyno. Exhaust was a 2 into 2 Khrome werks Hp+ with the spoon/performance baffle. I think it looks pretty good for what it is
​​​​​. Should be a huge bump from my SE Torque cam with the email tunes. I definitely don't know alot about the tuned bikes, curious about you guys thoughts.


Does this AfR look good?
 

Last edited by DerekG; Nov 19, 2025 at 03:19 PM.
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Old Nov 19, 2025 | 05:25 PM
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looks good from my perspective


 
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Old Nov 20, 2025 | 03:08 AM
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DerekG - just a little on the rich side, it's costing you some fuel mileage.
 
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Old Nov 20, 2025 | 10:42 AM
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I'll definitely be ok with a little rich, probably better than the SE lean tunes.
 
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Old Nov 20, 2025 | 11:33 AM
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Originally Posted by DerekG
I'll definitely be ok with a little rich, probably better than the SE lean tunes.
Don't forget that is only a snap shot of wot. That part isn't that well done and that's the easy part. The rest of the tune who knows if it's fat or lean.
 
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Old Nov 20, 2025 | 11:43 AM
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Originally Posted by DerekG
I'll definitely be ok with a little rich, probably better than the SE lean tunes.
you might consider posting this in The Dyno Room forum on this site..I remember Steve Cole, our resident expert here, sharing results of his tuning of M8s very early on and mentioning that these aren't the same as their TC predecessors in open loop AFR, etc..he has a lot of experience with knowledgeable and valuable information he has provided to us all
 
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Old Nov 20, 2025 | 02:52 PM
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Great feedback, thanks guys. I did talk to the tuner, he does tune all across the riding areas for AfR. He said of course everyone wants to see the peak numbers. It's a pretty gr Harley dealership right by where I live.
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