Hello Unbalanced,,,
First, understand the 07 SE CVO comes from factory to flow quite a bit more then the standard 96 inch and the motor is leaned out to make Mr. EPA happy. The 07 CVO flows better because of the large mufflers and CVO flows slightly better on the intake side. In fact, i've read many articles which claim the 07 CVO flows pretty decent in stock form. Second, after the factory free flash, and this is a stage one flash mind you, motor is now running on the rich side,, why, because the factory is trying to cool down the motor for all of us cry babies that cant stand the heat, and yes I’m one of them. Many wrenches will tell you this is a stage one flash.
The stock 07 CVO exhaust flows better then Screaming Eagles slip-ons the guy wants to add. Ask any HD wrench, they’ll tell you that too. If you’re adding a freer flow exhaust, and even true duals and SE intake, or even a big sucker, the stage one map is your perfect match.
I’ve got a friend with the 07 CVO Road King with True Dual Bubs with chrome tips and SE intake. His dealer honored the free flash as o.k. for his set up. He just got back from a round trip from Sacramento to Seattle. His plugs are slightly dark charcoal and the chrome tips indicate a little bit of a rich burn. – Personally, I would favor a little leaner burn then what he is getting. He is happy though, says the bike runs good and much cooler too.
Of course, in all cases, the proof is in the pudding; Read your plugs. If you see a lean condition, then go spend some more money and fix it. My bill is on the table, he is going to be o.k. for what he wants to do.