I think not many people are aware of the ACT engine features, its still new to mass market.
Having a camshaft that changes profile has been around for a little while, but using it to drop out the center two cylinders is a very new thing.
The
problem with trying to Map ACT engines is you are fighting what it is about. You are saying "I want the economy of this fuel efficiency feature... but i want a 20+ hp gain" I have seen in some instances people get better 'daily drive' fuel econ out of a good quality adaptive mapping (i think it was a Revo) as well as significant gains when the engine was pushed; but those engines didn't have the ACT fuel economy feature.
The point i'm trying to make is, the ACT kicks in when you are driving economically anyway, so mapping for gains in power and performance means you will spend less time using the ACT feature of the engine, and more time on all 4's.
Likewise if you map for fuel econ, be careful you don't put the engine under too much stress when it goes into ACT mode. Even when up to temp and the lube's flowing slick in the engine, moving the crank shaft around on two cylinders when its attached to another two 'dead' ones is extra load.
All that said, im interested in What Revo can produce for the ACT, can they maintain the functionality? Will they improve fuel econ? I don't think there is any doubt you will see mad hp gains when its running on all 4 pots, its a perky little beast...