Yeah, +2 on the Shark Injector! Removes the top speed limit, allows rev limit @ 7k and takes out the lag in the fly-by-wire throttle, and frees up a few ponys when you need them. Best 300 bucks you can spend on your X in my opinion for a few reasons.

On the Bonneville Salt Flats, just goofing off, hit 140 before I lifted (Speedo indicted). The X5 did very well on the salt being X-drive and all. The I6 really comes alive in those upper RPM's and while wind resistance works against you, it still had more left in her, just not willing to push much more as the tires at a v-rating were approaching their limit. You can feel their true German heritage at Autobaun speeds.

To each their own I guess.

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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.