Brandon,
I will tell you my experience a local tuner. I know you are not asking who, so I am just going to tell you what they did. I took the car, in my sig, to get it tuned. The car was put on the dyno to get our base line, with the A/F readings. First thing we found was the car was flat on the top end and was putting a beating on the 24lb injectors. I took the car back, made a few changes, and went back. The car was tuned with timing and fuel pressure. A chip was not needed at the time. The A/Fs were good and with a few more adjustments, we cracked open the bottle. By the time he was done, the car ran great NA or on the spray. I did have some hardware for auto timing retard and such, but a good tuner will listen to you. So be smart and listen back.
A good tune can be had with just the stock computer, fuel pressure, and timing. I would not trust a tune without the dyno.
And as I am sure you know, any shop that does tuning will also fix the exhaust or what ever you want fixed.
If you do want advise on where to take your car, I will tell you whom I am very happy with. Personally, I would never go without getting my car tuned. Sure it cost a few bucks, but from experience I can tell you that without it, it would have cost way more!
