I have the burger JBD on our X5 (2011) and love it. 30k+ problem free miles. Just make sure you take it out (takes literally 30 seconds to install/remove) before you take it to the dealer! For $280 I don't think you can go wrong. I have it set at 80%, got the engine light at 100% and it seems to have just as much pep at 80%. I tow my wakesetter with it in even.