I had an engine tune on a NA car once before and it was very much worth it to me. With a manual trans, you get a good feel for the engine power band characteristics and shortcomings and I've previously experienced satisfying improvement on a different car with a 2.4L engine. So I'm all in on this tune and am currently working with Rallisport on what changes he's going to make for my car. Addressing the 'rev hang' is priority #1, but he says that's easy so we'll see what other benefits come from this. I only use 87 octane and am not interested in being forced to use premium because around here they gouge you an extra $0.50 - $0.70 per gallon over regular. That would take a couple of pizzas a month out of my budgeting. I don't need more power THAT badly. Gotta have priorities straight.