Save yourself a bunch of money, do the walnut blasting service yourself. It’s a pretty easy process, just time consuming.
Comes with:
Media Blaster
Hoses and Nozzles
N54 Aluminum Adapter
Remote Starter
Set of N54 intake manifold and throttle body gaskets
Has everything you need to get the job done besides the actual walnut media. There is some left in the container although it’s not nearly enough to complete the job.
This kit was only used once on my 2008 135i and it worked very well. You can also use the kit for any other car you will just need the correct adapter for the engine.