A couple more points.
I rode home watching the fuel consumption and it looked like I was using fuel faster than before. When I was speaking with Rick at AAMC he said his Springfield got slightly improved consumption with the 558 cams, which I liked the sound of. I'd appreciate a little more range from a tank. When I checked my dockets today I found my fuel consumption dropped slightly. I checked the dockets from riding from Newcastle to Melbourne against the home run. That is just on 1,000 kms and several fuel-ups each way. Going down I averaged 17.5 kms per litre. Coming home I averaged 17.1 kms per litre. I know that turning on the new power of the cams will cost me in fuel, but cruise control on the motorway does not require extra performance from the bike. Even at level running the new cams plus decatting means a little extra spend on fuel and less range per tank. Today I rode out to Jerry's Cafe at Kulnura, a popular bike cafe about 100 kms from home. It's a winding road and mostly in good condition but speed limits mean I could not open the bike up too much. The power characteristics of the bike are very different. The extra torque is evident and the bike handled it without really needing too many down-shifts. It will carry itself well from 2,000 rpm to 5,000 in any gear, which is where I stopped pushing it. That's a very wide rev range. What made me change down was the different exhaust note. Before it was a low growly note - think of a German Shepherd eating and the cat comes along and sits there as if to steal his dinner. The dog does that low grrrr ... kind of warning. That is the old sound. Now the cat moves in and the dog snarls with a sharper note and higher volume, that snarl is the new sound. I found that holding in a lower gear and letting the revs really rise before changing up resulted in quicker acceleration and a calmer exhaust note. I'm not a fan of noisy pipes, especially the percussive attack-dog bark that some pipes have - mostly among my HD mates who seem to be having a volume competition. I'd deliberately not worn ear plugs today so I could get an appreciation of the new exhaust note. The noisiest point seems to be when I'm noodling along and crack the throttle without changing down.The bike responds to high torque requests at lower revs with the loudest exhaust note. Keeping the revs up where the cams are happier, and then giving it a high torque request, means a quieter note. And that is about it.
From Woodrising (no, nobody else has heard of it either) Rides a Springfield Dark Horse