I wouldn't bother, unless you are willing to forfeit your warranty. If your ECM is tuned and you take the car in for service it will be flagged and the powertrain warranty will be denied.So, I've had my ATS-V for a grand total of 4 days and I'm already itching to get it tuned.
I'm in Franklinton, NC which is a bit north of Raleigh.
Does anyone know where I can get it tuned by a reputable shop?
Even if you flash it back to stock, GM has gotten very savvy and can still detect the alteration to the ECM.
So far, I've read two horror stories on other forums, where people are left with $75K bricks. So, unless you are prepared to assume the costs of repair yourself, I'd leave it OEM. And with a first year model car, foregoing your warranty is somewhat risky.
I was hot to tune mine and add intake and exhaust until I read through what happened to others. There is a LOT of potential to be unlocked, as it seems the car can run up to 550whp and torque before fuel becomes a problem. But, all that extra power will mean little if you have detonation in one of your cylinders that makes the engine take a dump.
Sorry to be a bummer... but unless you are loaded you may want to investigate what has happened to others.