you can drive around just fine without cats before you get tuned. you'll only have a check engine light. no big deal.
Corect. But most shops offer the sell the tuners as well.To build on some I OPs questions. If I want a dyno tune from a local tuner I new to bring in my own sct tuner correct? Obviously to be able to go back to stock or switch between tunes
I did the Airaid CAI intake, Steeda tune, GT500 mufflers and O/R X-pipe.
The car made 416rwhp
generous dynoI did the Ford racing procal tune and got 395 RWHP on an otherwise bone stock 13 GT m6, the best thing about the ford tune is you keep the 3yr 36k mile bumper to bumper warranty.