CFR's with DK Thunder Torque Inserts ??

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Jan 8, 2020 | 12:07 AM

dforeid

Thread Starter

Road Captain

Joined: Jan 2006

Posts: 704

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From: Western Washington

CFR's with DK Thunder Torque Inserts ??

Folks,

Bone stock 2019 Road Glide. All I have done is add CFR slip-ons - no breather upgrades, just the slip-ons. It seems like the new muffs (while I like the sound) have lost me a bit of torque. Has anyone added the torque inserts to their CFR's? If so, did you feel a difference in the butt dyno? Any difference in sound?

Just wondering before I drill unnecessary holes in some beautiful mufflers.

Thanks in advance.

Jan 8, 2020 | 07:35 AM

FrankEV

Road Warrior

Joined: Oct 2017

Posts: 1,883

Likes: 809

From: Ormond Beach, Florida

Quote:

Originally Posted by dforeid

This is what I have done recently to Big Sister (see signature pic) that was basicly stock except it has Magnaflow 4.5 Hitman slip-ons that I installed on day one.

About two weeks ago I replaced the stock breather with the H-D SE Wedge High Flow breather w/K&N filter and did a tune with the H-D SEPST. At the same time, I installed a set of DK TTI 158 lolipops in the end of the Hitmans.

I do not know which did what, but between the two mods, my seat-of-the-pants dyno says that It feels like my M8 has been woken up. Although the M8 114 is a beast of a motor from the get go, the bike now has better pull in the low gears, better passing type acceleration at cruising speeds and just feels like it is not working overall as hard as it was before.

As far as sound is concerned, the Hitmans, although not really louder, seems have to have a stronger deeper sound under acceleration as well as a deeper rumble at cruising.

The installation of the TTI's required a bit of modification because the sidewalls on my Hitmans is almost 7/8" hick and the threaded portion of the TTI's was too short to pass through the thick wall. I used a piece of a rod coupling and a 2" lomg threaded stud to make the threaded portion longer. This required a cut off grinding wheel to cut the coupling and to shorten the threaded part in order to make it fit. Only less than $2 in parts, but some work and time to do.

TTI in my 4.5 Hitman Slip-on Muffler. The rod coupling was cut to about 1/2" length.

If your RG is a M8 107, I think it will significantly benefit from a breather upgrade and tune. My Cherry, with the 107, had significant improvement of idle and throttle responce with a SE breather upgrade and SEPST tune.

HTH

Last edited by FrankEV; Jan 8, 2020 at 07:41 AM.