I was talking with Shaun about this a while back. Apparently the direct injection on the gen 3 benefits way more from e85 than the port injection of earlier models. I saw 12 hp going from 91 to e85. We don’t get nearly the bump the gen 3’s do, but still worth the trouble for all the same reasons.
Yeah the direct injection can take a lot more timing than port injection, and its pronounced at low rpms on the coyote because the direct injection is mainly used below 3k rpm. So on a track not a big deal, but fun for a street car. The higher comp of the gen3's also generate a bit more gains up top than a gen2 though too.