107 M8 power through factory exhaust
#11
I have a 2018 Road King....Stock mufflers!!! But.... I took out the "cat" and it has a 22X cam in it. Canned map from Fuel Moto, went from 81Hp/103Tq (stock with canned map) to 101Hp/111Tq again with canned map for that application. I get comments all the time, asking if the mufflers are stock??? I have a nice rumble, and can drive through my neighborhood.... If I wind it up it will bark enough for me. I have no intention to get a "full tune" mine runs great and I still get 42mpg. Good luck with your ride. CSM-H
This is basically what I want. An increase in TQ across the rpm range ie better avg tq and keeping the fuel mileage would be excellent!
Last edited by AliensilverFXDBI; 07-14-2019 at 04:09 AM.
#12
The following 3 users liked this post by Another Old Timer:
#14
I've got the stage 2 tq cam, AC and still run the stock exhaust on my 17 RK for 22000 miles (installed at 1K service). Bike runs fine. Nice and quiet. IMO the stock cam is too neutered on the top end so adding it was an improvement. While the warranty is up and I could easily build the motor up, I'm actually plenty happy with the current power level.
#15
M8, 107 RKS w/22X cam
AliensilverFXDBI, my Dyno sheet is on the M8 Dyno thread...I love it, early and long!!! Good Luck, CSM-H
Last edited by h7009; 07-14-2019 at 12:38 PM. Reason: added information
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I have a FM air cleaner, decatted head pipe, Andrews 460 cam, and the stock mufflers are opened up a bit. The crimped baffle tubes, I opened up up with a 1” rod. There’s still good back pressure, and I like the quietness. I love the look and sound of the stock mufflers. I can chirp 2nd, 3rd, and 4th gears, and lift the front tire on second gear shifts. I have not dynoed it, but I’m happy with the butt dyno.
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