It won’t necessarily void the warranty. The device does not modify the stock computer. It’s a piggyback system. You plug it in under the hood, and it intercepts and modifies the signals coming from various sensors. When you take her in for service, unplug the device…it leaves no trace of itself. Granted…if you have a catastrophic engine failure, there may be a way for them to see “something” was causing the engine to make more power, but it’s a long shot. The Hyundai and Subaru crowd has been doing it for years.I've heard about that but my concern is any modification will void the warranty.