Well, being that I am engrossed with the radio controlled hobby, I'm always looking for ways to enjoy it better. By nature, I'm a tinkerer. When I find something I'd like to do differently, I try to do some research before I jump into anything because its better to go into something kind-of knowing what you're doing vs. not knowing what you're doing at all.

I've ported some car engines some years ago - all with better results than factory. Though I didnt change any timing, I merely opened the sleeve ports up and smoothed the runners some inside the crankcase. I had noticeable gains. I have talked to many engine "Modders" over the years and every one of them has said not to mess with the exhaust port in any way. I'm more concerned with the crank port, boost port, and transfers. Making some adjustments here is bound to have some improvement in performance. In my hypothetical scenario, a drop of 2000rpm is roughly 15% - I would think there'd be enough room for adjustment to make up this difference or come close. Maybe I'm wrong.