Just had the PPK1 installed on Thursday. From the dealer it didn't feel that much different, but stomp on it a few times and it quickly adapts to becoming significantly quicker. The wife in particular loves the new power. Big thumbs up! Happily living without the Procede for now. Wondering if a charge pipe would be of any noticeable gain.
I can confirm getting a white envelope.
2011 335xi E90 N55 6MT Performance Edition
Other rides: Ducati StreetFighter 848 | Ducati Monster 696 | Porsche Spyder 550A (Replica)
Last edited by Amlethae; 05-13-2012 at 02:02 PM.