Originally Posted by Soliditude
Thanks guys! I wouldn't have wasted all that time writing if I wasn't impressed.
I highly recommend getting it for whoever is looking into one. It's a must-have mod for me. More pleasure of driving, a beastlier sound, no warranty issues, no fuel economy decrease and totally legit. They stick your car with markers and send you an entire envelope proving, by VIN, that your car has the tune installed.
Resale value! Not something you'll get from aftermarket.
Did they mail you this envelope or give it to you when you picked up the car after installation? What does it include?
I had the PPKI installed on mine in Dec, got the stickers but not proof from the dealer/BMW that it was installed on my car. I guess I should give them a call.