Whoopsy:
Why is the engine still a sticking point for some? Yes it's relatively new and not yet race proved, but same can be said of the Metzger engine when it first came out, look where THAT engine has taken Porsche.
Even when Porsche/VW has the resources, I do not think the current DFI engines are a stop gap one. They must have planned many things for the basic block on capacity and output and has the head room built in.
Ah, but the Metzger motor was descended from above, fully perfected (am Anfang), indestructible, everlasting.
And lo and behold, all engineering know-how to that point was lost and forgotten. And all technical progress after that point stopped. For there was nothing new to be learned in Motordom, nothing more to discover, nothing to improve.
Hmmm... It is a religious thing...