From the original thread: https://www.hdforums.com/forum/touri...formation.html

Today we have been dyno testing the 2010 Ultra Limited 103". The Limited is pretty lethargic in stock form but not to worry, we see plenty of potential. Our dyno testing has shown in the stock Limited 103" bike makes about +2Hp/4Tq more than the equally stock 2010 96" bikes that we have tested, although the 103" does have better lower end torque. Besides its state of tune, the bigger issue is the heat which is due to several factors, primarily the catalyst in the stock headpipe as well as the extremely lean fuel mixture. I know that this has been talked about before, regardless of what has been stated simply put these 2010 bikes are signifigantly hotter than the earlier models from a radiant heat standpoint. This is quickly apparent on the dyno trying to keep the bike cool while tuning even with 8000 CFM's of cooling fans including a blower directly on the catalyst as otherwise it will glow red hot under even a moderate load. From the 2010's I have tuned the heat issue is simply a fact, but at least it can be resolved pretty easily and while you are moving on the road most heat is dispersed pretty well. With that being said the 103" Limited actually runs and drives pretty well, even in stock form it has good throttle response and you can feel the increased low end power over the 96" bike.

OK, back to testing. We first performed a full dyno evaluation on the completely stock bike, we then installed a set of Jackpot Dyno Tuned mufflers and dyno tested them for a direct comparison on a stock bike. Once we had our baseline testing completed we installed a Stage 1 air cleaner and Dynojet Power Commander V (PC-V) I then spent a couple of hours tuning and developing a fuel map for this combination. These easy bolt on modifications allow for pretty signifigant gains with the combination of free flowing mufflers, Stage 1 intake and EFI tuning offering +11Hp/10Tq over the stock bike. Also note these mods allow for a very good reduction of heat, including radiant heat from the exhaust system. We will be testing our Jackpot 2/1/2 headpipe tomorrow and will post results when available.


Completely stock 2010 Ultra Limited 103"



Stock Ultra Limited vs. Jackpot Dyno Tuned mufflers



Stock Ultra Limited vs. Jackpot Dyno Tuned mufflers, Stage 1 air cleaner and PC-V

 

Jamie, Any numbers to add to this with the 2/1/2? I'm impressed so far.

Thanks!

 

Hello, there are several dyno charts for the Ultra Limited 103" bike with the Jackpot 2/1/2 headpipes at http://www.jackpotmufflers.com/headpipes.htm