Remote tune would be something like Tuningbyjames, where he sends you a base tune with what you specify you want (like Bama, Steeda, MPT, etc), and then you datalog through your tuner by driving with it and send your file back to them. They will then take your datalog and analyze it, dial it in more for your specific car, sometimes this takes many datalogs depending on your modifications. This processes is usually done when you have modified your engine beyond basic bolt ons, this would be done for cams, FI, nitrous, etc.
A dyno tune would be done at a performance shop where your actual car is on the dyno. They will dial it in until they get it to get more power, torque curve and so on. Then they will use your SCT 4 to load the tune or tunes onto. Most done this way only have one tune file on their tuner but Im sure if you want 3 like you get with the email tunes (87, 89, 91-93 octane) you can, its all in what you want to spend .
In your case with the average bolt ons, exhaust, CAI, TB/plenum, headers, whatever you add to the car a Bama "canned" email tune would be fine, and you would feel some gains especially if your an auto as the shift points will be adjusted and firmed up. You can add things onto your car and have the tune updated by companies like Bama free for life of the car. If you end up modifying your car beyond basic bolt ons you will want to go with a local dyno tune or a remote tuner that is essentially the same thing, just a longer process.
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