I've got a '23 FLHSX that I bought new and just had the 114 to 122 stage III done by the dealer with all SE parts (w Reinhardt slip-ons) to maintain the warranty. They dyno tuned it and I feel like they did a good job, but I'm wondering what y'all think. I'm pretty happy with the results, but I'm not that well versed at reading dyno charts. The little dip at 4k seems weird, but overall it looks smooth. What do you think, should I be stoked, content, or looking for a finer tune? I know, of course, there are better parts available that will yield better numbers, but until the warranty is up, it's SE. Thanks for your input!

 

If you can get a copy of the dyno chart that shows what the base run is. No way to tell how MUCH increase there was. And honestly, until the warranty is over...you're locked into EPA emission standards.
Enjoy what you have for now..

 

I understand the warranty issues, not my first rodeo. I'm also not really interested in how much it improved, I know the stock is bottled up, again, not my first rodeo. I'm interested in opinions on the shape of the curves and what others have gotten from a SE Stage III.

 

That looks more like chatter (an interference of some sort) rather than the actual numbers. Unless, the injectors were pushing over 95% duty cycle at that time, then it's time to install larger injectors.

 

I would be more concerned with 4500-5000 rpm. Did they give you the AFR chart of the run?
As ​​​@Slingshot383 said..

 

They didn't give me the AFR chart and I didn't think to ask when I was there.

 

You should get the AFR chart as well as the RPM/ MPH chart.

 

Overall numbers look weak to me for a Stage 3 122.. I got more from a Stage 2 114 with Redshift 468 cam. A lot of people worry about the warranty at the expense of putting money into a build that leaves power and torque on the table.

However, it does improve what Harley provides as stock.

 

Se 447 cam and 122.. Looks good to me.. You'll get more with a cam that has some overlap.. What exhaust?

I'm thinking about doing a 122 with the 447 cam but want to run the stock exhaust..

 

Yeah, it’s a pretty mild cam. I got the adjustable pushrods so I can change it out easily if I don’t like it. The pipes are Rinehardt DBX 40 slipons.