I'm the proud owner of a 2012 110 CVO Ultra. Bought it new, my third Harley. I've been on a quest to squeeze as much power out of the engine as I can without changing anything in the motor. This is how it turned out so far:


According to Harley's Screaming Eagle catalog a stock 110 puts out 80 HP and 100 ft. lbs. of torque. One thing I don't want is a two into one exhaust. I think a big twin Harley needs a dual exhaust. I've heard the argument you can get more power out of your bike with 2 into 1, but I like the sound of duals. Another thing is I didn't want to do anything to the motor that may effect its reliability, like cams, pistons, and head work.


The changes I made were:


The removal of the stock header, and replacing it with a Vance & Hines Power Header. The removal of the stock mufflers and replacing them with Screaming Eagle Street Cannons. The addition of a Screaming Eagle Super Tuner Pro, and a couple hours of Dyno time.


The Results:


A deep throaty sound. Much better throttle response. The final Dyno numbers:


97.72 hp
107.70 ft lbs of torque


A 22% increase in hp, and an 8 % increase in torque. all without touching the motor.


This bike weighs 900 plus pounds and will never be a real hot rod. But if you want to add a significant amount of power to your bagger without changing the cams or doing an other motor work, here is one option.


PS


Another change made to this bike was the addition of Harley's premium ride system. This system replaces the front forks with gas charged units. It replaces the rear air shocks with gas charged shocks with a preload adjustment. Its awesome in the twisty's. It has surprised many European bikes.

 

I would say that is pretty damn respectable increase....

 

Sounds great, a good balance!

 

I suggest that is your most significant improvement! A bone stock bike will be quicker and more comfortable with those installed.

 

I need to give credit to Neil at Mobile Bay HD for the work on the Dyno. He did an awesome job. This bike is Dynamite in the twisty's, and with a little skill from the rider will lift the front end. Money spent is less than $1500. I'm pleased with the result. I installed the header and mufflers myself saving myself some money.

 

That is a great improvement.
But I believe you are giving a fair amount of power with the perception that a mild cam like Woods TW222's would be unreliable.

 

Congrats on your improvements.


I really like the HD Premium suspension on my '09.


The (stock) 255 Cams are actually a little harsh on the valve train, you might want to replace the lifters with S&S, before you have to...

 

I am glad you are enjoying your CVO. My suggestion is pay attention to your lifters. They have been known to fail in less than 15K

 

Not to get off the subject; are the lifters in my 14 Limited 103 also weak? I have heard that the S&S lifters are much better. Thanks

 

The lifters in my 12 CVO went out at 18 K. Catastrophic engine failure, and over 10K in repairs

all HD lifters seem to be similar. I am currently using S&S in my 120R. which i will now check every 10 to 12 k and change when necessary. I am choosing to think of lifters as a maintenance item