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?
yep, these guys are finding you can get to about 550whp before the stock fuel system becomes inadequate. weaponX is working on some camshafts to address this; they have a test platform that is running in the 10s at the strip. guys are having issues in the upper gears at max throttle, high speed.I hear you on the warranty but that will not hold me back once some of these tuners get some experience under their belts and have a history of success. I have however heard that all most of the drivetrain supports 550hp pretty easily that there is an issue with not enough fuel being available without changing some parts? I briefly looked at Hennessey's package though and he makes no reference to an upgrade that would increase fuel availability and I would think they know what they are doing but I have never dealt with them.
If you want a very reliable tune that also allows you to reset it to OEM spec in case you have to take it in for servicing and you're concerned about the warranty, then the only place to check it is Trifecta. Go to their website to learn all the details as to why they are the premier tuner for the ATS-V. I recently uploaded the tune to my 2017 ATS-V and I could not be happier. No bolt-ons required, took me less than 10 min to complete the tune upload to the ECM. Amazing!Weapon X is now selling spare PCM for the ATS-V.
Do you think Cadillac would be able to tell if you swap between the tuned TCM and the Stock TCM?
I really want to get this tuned but can't risk losing the warranty.