What does a custom tune do to the warranty, if anything?

 

If the technician working on your vehicle finds out the programming has been altered your warranty goes bye bye. I don't know how they'll be able to tell it's been altered but I know at the Volkswagon dealership I used to work at, the seasoned techs could tell after piddleing with it for a bit. Honestly if your truck is still under warranty I wouldn't do anything more than a K&N filter and exhaust. They'll let stuff like that slide but that's usually about it.

 

Just get a custome pcm tune and dont turn in thestock one for the deposit. Keep it and when you take it in for service swap em out real quick. Alot of guys with trucks under warranty are doing it that way. Its only like a 75.00 deposit fee anyway!

 

Or you can get a Predator, lol. I know I am an *sshole.