hate to grave dig here but....

I'm think about trading in the SS on a new GT. I've read a little here and there about them.....but I've been "out of the loop" for some time.

What kind of times can I expect out of a stock automatic?

What's the deal with having to get a freakin tune after every single mod? It looks like they made the computers in these a real pain in the ass.

What will it take to get an auto to run roughly 13.50s at maybe 103ish? I'm thinking maf, x pipe, axle back, 4.10s and a tune. That should get it there (provided it hooks) right?