LOL Jimefam. Too funny.
Ok, I'll admit. I've been waiting for Avus to post too. Regardless of what the numbers say, I'm thrilled with the upgrade on mine. The big surprise it is the better fuel efficiency. Just crazy! Can't understand why BMW doesn't just put these engines out tuned with the Dinan programming.
Getting this done on your 550 MSport will be pretty amazing to be sure. I know with my upgrade, they had some issues - especially being the first xDrive vehicle. But with some valiant effort, they got it to work. Anyways, we'll wait together now for Avus.
