Quote:
Originally Posted by allwheelsjive
Where are all the real-life, my-warranty-was-cancelled stories? Unless I've missed something (possible - there seem to be 100's of related posts), all I've seen is conjecture. BMW could save a lot of $'s in ECU tracking R&D and just monitor these forums. Hope you guys aren't posting your VIN....
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+1...I know some of you guys are tired of seeing this but here you go again

I'm doing this because I was told several times not to use aftermarket parts from tunes to exhaust. I listened at first ...
Will using ‘aftermarket’ parts void my warranty?
No. An ‘aftermarket’ part is a part made by a company other than the vehicle manufacturer or the original equipment manufacturer. Simply using an aftermarket part does not void your warranty.
The Magnuson-Moss Warranty Act makes it illegal for companies to void your warranty or deny coverage under the warranty simply because you used an aftermarket part. Still, if it turns out that the aftermarket part was itself defective or wasn’t installed correctly, and it causes damage to another part that is covered under the warranty, the manufacturer or dealer has the right to deny coverage for that part and charge you for any repairs. The FTC says the manufacturer or dealer must show that the aftermarket equipment caused the need for repairs before denying warranty coverage.
FYI...BMW has their own tune in the PPK so they cannot declare tunes are bad for your car, unless of course you are pushing 20 psi
Please read...this is from the FTC as of Dec 2010, but does not apply to other countries:
warranty_ftc.pdf