Welcome to the world of some of the most misunderstood engines that have ever been bolted onto an aircraft. First off, read and understand everything your AFM tells you (common sense). Next, disregard all the old wives tales that you will invariably hear from the airport experts who probably have not ever flown these engines. And finally, search the site AVWEB and take to heart anything that you can find by the contributor named John Deakin. I think he knows more about the internal combustion engine than even the people who build them. If I can add a personal note, I spent a few years in the early 70's flying piper pressure navajos, and never had a problem with the large geared turboed lycomings, when a lot of other people had big time difficulties. Don't change throttle settings any faster than your manifold pressure needles can track "with you". If you're training with engine outs, do it with mixture cuts, never "yank the throttles". Doing so just might detune the crankshaft counterweights, setting you up for a catastrophic mechanical failure in the future. And lastly, be a real mother hen about leaning and CHT. Enjoy, they really sound great, almost as sweet as a round motor or a "flathead ford" with open pipes.-CY
