Good thing you caught on to it! If the steel pin that forms the top pivot gets loose, it finds it's way into the combustion chamber and makes all kinds of boo-boos. The kind that destroys your motor. Cool concept, bad design on the disa. I pulled the flap off a year ago and haven't gotten around to replacing it.I'm thinking about going the German Auto Solutions route, and putting in their hardware. My guess is that I'm missing out on some torque and performance by not having it on there. Anybody know?

__________________
2005 X5 3.0, 6MT, Alpine White on Truffle Brown, Sport, Preim, and Cold Weather, Alpina Stainless Headers, AFe Intake, UUC SSK, OEM 87's, 3.64 Differential Swap,Performance Modified Euro 2 Tune, UUC LTW Flywheel and HD clutch, Bilstein B12 Suspension kit
Future mods ZHP/Schrick Cam Shaft upgrade, Operation code name:Doppelschrauben-Kompressor

Wife's Ride: 2011 e70 X5 351 M///Sport.

Also in the fold: 2004 X3 3.0, 6MT, Black Sapphire on Terracotta, port, Premium, Cold Weather.