Pierburg boost controller for 20V Turbo

Hi guys!

I had bought the engine 20V Turbo without this Pierburg boost controller. What I have to do now? Is there possibility to buy new one ? Should I buy another one (Aftermarket) or try without boost controller? Thanks!

I believe the common thing to do is replace it with a MAC 3 port solenoid, readily available on ebay. Doesn't require any modification to install, just a couple of bullet connectors to plug into the original wiring harness. Mine was still installed but bypassed when I got the car but I put a MAC in on a 3D printed bracket and it works great.

Yeah few guys told me that MAC is good option. You are satisfied with MAC ?

Are these a good / better alternative, what are the advantages?