Got my cam.

There is a another thread on this forum about 1.6 int/1.5 exh rockers.
Notice this cam has 4* less exh duration.

Right. That's because of some research and experience Doug Dutra did and a couple aftermarket companies picked up on it. It's not an end all be all, but it works pretty good. Erson had a couple of reverse grinds and now Hughes does too.