I called Fuelmoto about the TW-555. They recommend upgrading the lifters and having to use different pushrods (different base circle). If I did all that I would just go with the whole 107" kit. For now, I might just go with a set of SE cams. Much cheaper, because I can reuse the lifters and pushrods.

 

If you stay at stock compression (stock head gaskets), you should be very happy with a tune...

 

And can find a dealer that sells them at 20% off

 

I saw a dyno chart comparing the 254e and the 255 cams in the same bike on the same day. The bike was a Limited with stock 103, intake and exhaust, I don't remember any mention of tuning but i'm sure one was used. The power and torque curves of the cams was close. The 255 cams run around 5hp and 8ftlbs above the 254e cams up to about 4000. At that point they crossed paths. The 254e cams run about 5hp and 5ftlbs above the 255 cams until they hit the rev limit. The peak numbers for the 255 cams was 84hp and 108ftlbs. The peak numbers for the 254e cams was 89hp and 101ftlbs.

 

I had the 255 cams for awhile and then was talked into changing to the 254e because of better highway performance. The 255 is better low end to mid range and then dies off whereas the 254e continues on through the mid range. It's easier passing at 70mph now but I've lost some of the "fun" in the low range between lights. It dyno'ed at 92 and 104 and I think it could do better with a "proper" dyno guy which we don't have around here. Both cams are good--255's are easy to find. In fact, I still have a set for sale.

 

Finally someone that has ran both! Did you dyno the bike with the 255's before the switch to 254e? Your signature says ported heads. I'm sure that changes things a little too. If you felt the torque drop off with a 103, it would be much worse with a 96!

 

Is cam change out a job you can do your self or do most have the dealer or a shop to it for you?

 

You can do it. It's fairly simple and there is a great YouTube video detailing every step.

 

This is not a 96 inch engine, but here's are a couple of graphs with the SE 254e cams installed on a 2012 FLHTK 103 with Rush (ceramic coated inside & outside) true dual head pipes and the Rush mufflers with 2" baffles. Also installed is the Ness Big Sucker A/C kit and a TTS. The build and dyno tune was done by Doc's Performance Tuning.

I was looking at the FM Jackpot head pipe and the Rush true duals. The Rush TD's made more low end torque then the Jackpot pipe. So for this build I went with the Rush. And did not want to wait 6-8 weeks for a Jackpot pipe, and longer for the ceramic pipe.

I have never used the SE 255 but I can tell you the 254e has nice low end torque and great mid range torque. Cruising in 6th gear is where the stock 103 fell flat on it's face. With the 254e you will never be required to down shift at cruising speeds in 6th gear for more power.

I have found this to be a smooth, quiet running setup ideal for touring.

 

Points out that you can't always know what's going to work best until you bolt it up and tune it.