voiding warranties is reasonable, just going to be a rude awakening for some 335 modders

I don't see anything new about any of this. Every car company says they will void that part of the warranty if modified and was the probably cause of damage. I see this as the exact same as every car manufacturer saying they will void your suspension warranty if you lower the car. It is perfectly reasonable. However, if they deny other parts of your warranty that is a different story.

What is the point of waiting till your engine/tranny warranty end? If the car dies in either scenario, you will have to foot the bill. Might as well do it sooner, then sell the car before it gets to those problem years.

Sucks for the used car owner who will be screwed.

I can see BMW extending the boost to tranny problems. IE, the tranny was not meant to handle the added HP. This is exactly why I didnt go turbo again. It just seems like too much temptation and too many potential headaches.

Under the Magnuson-Moss Act imposed by the Federal government, a dealer / manufacturer cannot just void your warranty unless they can prove it specifically caused a failure. I don't think any manufacturer cannot circumvent federal law.

That's the way the law sounds. In truth, you have to prove your mods didn't cause the problem, and if it goes to a hearing, you'll be up against some very expert witnesses. It's all about who you know, and what they're willing to do for you. Your service advisor can be your best friend or your worst nightmare.

Upping the boost, chaging the Air/Fuel Ratio... can be linked to almost any engine seizure failure you get.

If you have a problem with the tranny.... IE grinding etc.... can easily be linked to any major power uprade.

Remember guys, 99.9% of the time, more power than stock = shorter lifespan than stock...

This isn't the most ridiculous warranty info I've heard, however. Winner of that one goes to Lamborghini cutting the warranty if you add aftermarket wheels.

In fact, minus the detection part, this is what has kept me from modding my cars in the past heavily.