more efficient than a 404 so actually better useful load.
I'm not sure how much carbon fiber would be used, Tecnam normally only use carbon fiber for cowlings, winglets etc, wings, fuselage, control surfaces generally still aluminium for ease of repair and cost.
I wonder if the IE2's will run on MOGAS, or ethanol fuels.
seems pointless to sell an engine these days that can't, It is strange they aren't intercooled and liquid cooled, simply cannot build a properly efficient engine that isn't liquid cooled, doesn't matter how many sensors or computers you throw at an IO-540, it's never going to be anywhere close to a car engine.