Here is my dyno run printout I had completed today. Prior to this, the PCIII was loaded with a map from Fuel Moto for my 08 FXSTSSE2 with Rush slip-ons (2.25" baffle) and a heavy breather. The bike is stock other than that. I was getting a lot of popping on deceleration, but the tuner was able to get rid of that. The final numbers are max HP 87.77 at about 5000 RPM and 105.53 ft-lbs at 3600 RPM. He set the Air/Fuel ratio to 13.0 and was able to keep it pretty close throughout the run. I'm very happy with this. The tuner said he could have coaxed better numbers, but I was more interested in a cooler engine. That's plenty of power.
Another reason for the popping was loose exhaust bolts at the cylinder head. Two of them could be turned by hand. The tuner said this is common for Harley's and suggested I check them at least once a month. I had the same issue on my old Fat Boy so I was not too surprised.
On the subject of engine heat, the tuner said he had just finished a test of four different synthetic oils. He is writing an article for his newsletter. He tested Amsoil, Mobil 1, HD Syn3, and Royal Purple. He used his own bike for the test. Starting with a cold engine, he ran each oil through the same dyno run and measured HP, torque, oil temp, and head temp. Hands down winner was Amsoil. On his bike, the max oil temp for the other three varied between 220 and 235. He could not get the Amsoil to break the 200 level. The dyno stats were not ready yet, so I'll have to wait for the newsletter.