Bought a new car and have been preoccupied, but I still need this gone.
Evolution Racewerks FMIC Black (15ft of DEI Gold on motor and radiator sides - 535i/xi N54 direct fit) - Now
$625 shipped to lower 48 US States.
This is a direct bolt on for the 535i/xi. Only thing you need to do is move the trans cooler over the FMIC (zip tie or bolt to the power steering cooler) and trim the lower tray with a razorblade to remove the 3mm bump that holds the stock FMIC in place. One of the very few 535 FMIC that allows you to go back to stock as there is no major deconstruction to install it.
This goes for over $1k new, I would like this to go to a new home that needs reliable lower IAT's.