Yes, if you motor in fact fails while tuned, it will void your warranty. The question is, will Ram go that far to check if it was tuned? Some have experienced that, others have not.
Maybe I can clear this UP, GM All makers Must meet the certification REQUIRED by Federal Law. The instant YOU delete / defeat ON/OFF road use (The only exception to this law is Race or off road competition) GM or your Dealer cannot (legally) even repair the Vehicle if it has State Plates.
Enforcement is the issue, Many times action is NOT taken when the warranty is voided, This is the parties involved discretion, MAKE NO mistake YOUR warranty is voided the instant you make defeat or delete steps to any component that’s needed to meet the certification.
Enforcement is the major part of any Law, if No enforcement then it’s a statement, if the parties involved decided to enforce the law it is now binding and absolute.
Your warranty cannot be Voided on all component's that have NO bridge or connection, Example NEW radio cannot void suspension components, but it sure can void ALL electronic communications. Enforcement is the key Part of any law or warranty. When disagreements arise, they are generally decided by arbitration or Judge.