[CharlieChaos]

Originally Posted by Ravenlokk

Agree. You're pretty much limited to Intake, catback Exhaust, Braces (strut tower, subframe).

Also IIRC: The service tech is the one who's call it is what and what does not void the warranty. But if the part can in any way influence the part that you're trying to get covered under warranty- they can legaly void it.

For engine/drivetrain related warranty work: Pulley, Tune, Catless-Header, Turbo(obviously), ECU mods, and even intakes etc CAN void warranty. (However, ECUtek tunes are apparently undetectable by the dealer- so it becomes a moral issue. Do you want to not void warranty, or do you want to get away with mods that they cant detect?)

Anything that increases power could potentially void transmission, dif warranty.

Anything that increases power or grip could potentially void warranty for chassis/suspension stuff.

If fraud doesn't bother you you can do a lot of stuff, and just revert back to stock when you go to the dealer as if it never happened. But a lot ultimately depends on the service tech, and the dealership what you can get away with.

Also im not an expert by any means, but how you talk to your service dept, and how you present the facts can be a big factor in what can and will be tolerated.

Above is the best info anyone could give you. If they can connect the dots from the problem to an aftermarket part they can void the warranty.