First of all you must understand the way that GM can detect a tune, and what tools they supply the dealer with. The only thing the Dealerships can detect is a special code embedded within the calibration. Our undetectable tune option retains this special code. Now as far as backing it up, we have the same tools here that the dealers use to "detect" tunes. We have done it here, it works, we have taken car's to dealers to test it, it worked flawlessly. We have done numerous cars with this option, and not one has ever had an issue with the dealer when they checked for tunes.
To guarantee that your warranty won't be voided would be impossible for any tuner, or after market part manufacturer to guarantee. Look at it this way, every dealer is different. I had a dealer years ago that said they wouldn't work on my car because I had a k&n filter in it and that voids your warranty. What did I do? took my car to another dealer and they worked on it, and they now get my business for new cars. On the other hand we have dealers that warranty transmissions in cars that produce over 650 rwhp with boost, heads, cam, headers, and drag radials all installed still when the car was taken in for warranty.
All that GM's "new" warranty policy states is if you are replacing an engine under warranty, you must show a screen shot of this special code and attach it along with your warranty claim. If the code matches, you're golden, if it doesn't, you aren't. But this is where we come in, any normal shop that tunes your car loses this special code when tuning the car because they do not have the correct capability to retain it.
