2024+ Center-Cooled Touring Models 2023.5+ CVO and 2024+ Road Glide/Street Glide/Street Glide Ultra Center-Cooled Gen 2 M8 Touring models

Quiet Stage I (now Stage III) Road Glide Build

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Old Dec 29, 2025 | 09:38 AM
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I purchased the Harley Davidson SE Extreme titanium mufflers, high flow air filter insert and the SE tuner. Tuner allows you to map the current configuration on your bike. In order to record optimal tune for you’re bike you have to set the auto tune feature. The tuner keeps disconnecting. I learned that you unpair the bike infotainment system from your phone the tune will stay connected. The dealership stated this is the only options I have for stage. The slip-on mufflers are extremely expensive, but quiet. I live in a condo the is a necessity. My overall assessment is I’m not impressed. I wish they offered the screaming eagle tuner apparently they don’t for center cool models.
 
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Old Dec 29, 2025 | 09:55 AM
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you got the SE tuner but wished they had a Tuner?
 
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Old Dec 29, 2025 | 09:58 AM
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Originally Posted by jalcors11@charter.net
I purchased the Harley Davidson SE Extreme titanium mufflers, high flow air filter insert and the SE tuner. Tuner allows you to map the current configuration on your bike. In order to record optimal tune for your uh? bike you have to set the auto tune feature. The tuner keeps disconnecting. I learned that you unpair the bike infotainment system from your phone the tune will stay connected. The dealership stated this is the only options I have for stage. The slip-on mufflers are extremely expensive, but quiet. I live in a condo the is a necessity. My overall assessment is I’m not impressed. I wish they offered the screaming eagle tuner apparently they don’t for center cool models.
yes they do, I have it and used the Stage 1 ECM calibration for my SE Extreme Flow AC and SE Titanium Mufflers. Runs fantastic with noticeable overall power increase. I'm really satisfied with this setup.


 
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Old Dec 29, 2025 | 11:31 AM
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Originally Posted by mjwebb
I used the Stage 1 ECM calibration for my SE Extreme Flow AC and SE Titanium Mufflers. Runs fantastic with noticeable overall power increase. I'm really satisfied with this setup.
Great! H-D advertises big gains for Stage 1 on a 117. The stock air cleaner and mufflers are quite restrictive, even for the stock cam. The Cat in the head pipe is not a performance problem at stage 1.

 
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Old Dec 29, 2025 | 12:08 PM
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Originally Posted by Hulkss
Great! H-D advertises big gains for Stage 1 on a 117. The stock air cleaner and mufflers are quite restrictive, even for the stock cam. The Cat in the head pipe is not a performance problem at stage 1.

and this graph they show is for the 2023 previous gen 117, which our new CC 117s are advertised as having increased HP and TQ by ~ 4 % ... not too shabby at all
 
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Old Dec 29, 2025 | 12:18 PM
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Originally Posted by Hulkss
I've always had a heel shifter. I'm going to go without one at first. If I feel the need, I'll add the heel shifter.
Originally Posted by mjwebb
I kicked mine to the curb for good several years ago..riding returned to 'normal' again
Or get it off the floorboard with an extrnded lever.

 
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Old Dec 29, 2025 | 03:36 PM
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Here's a direct comparison of stock to stage 1 with the H-D tuner on a 2024 Road Glide.



Here's Stage 1 tuned with Dynojet Power Vision


Here's Stage 1 Tuned with TTS Mastertune, Stock Head Pipe, Khrome Werks 4.5" Mufflers with perforated baffles, CVO ST Air Cleaner (blue curves).

 

Last edited by Hulkss; Dec 29, 2025 at 03:39 PM.
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Old Dec 29, 2025 | 04:40 PM
  #28  
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Originally Posted by mjwebb
I'm really satisfied with this setup.
How would you describe the overall sound of the bike with the new intake and exhaust?
 
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Old Dec 29, 2025 | 05:01 PM
  #29  
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Originally Posted by Hulkss
How would you describe the overall sound of the bike with the new intake and exhaust?
at idle pretty darn close to stock, a little more growl when underway, whether cruising or getting on it, which is all just fine by me these days since I was satisfied with the tone and volume completely stock
 
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Old Dec 29, 2025 | 05:27 PM
  #30  
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I put KW 4.5" with their quiet baffles (plugs) and at idle it's close to stock but it has some bark when you get in over 3k territory. I've started with louvered baffles and while I like the rumble they're just too loud for prolonged highway ride to me, even with earplugs.
 
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