So the light went off after a fill-up the other day but came back on as soon as the tank got just a little below half tank. Since then it's been on after 2 other fill ups. I pulled the DISA valve out today - it's opening and closing properly, nothing's broken. I cleaned it up a bit and put a light coat of white lithium grease around the manifold sealing surface before bolting it back up.

I also replaced my gas cap as I was going down the route of low fuel pressure. I've yet to put a fuel pressure tester on the fuel rail but I just might. The fuel filter/FPR was replaced about 40K miles ago.

I unlocked the OBC and while cruising on the highway, my coolant temp is around 80-88C.

I also did the MAF test using the OBC and after a few redline runs, the highest I saw was 67 L/H. I believe this is normal for the 3.0.

I'm debating whether to order a new fuel pump and pulling the injectors to clean 'em.

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2006 X5 3.0L - Schwarz Black/Truffle Brown
Stock
But I keep it clean