Hello Queen City, great place!

First place to look on an 850 is the distributor rotor , cap, plug wires, and plugs. Ignition parts life runs 100k mile on these cars so they get neglected.

Fuel injection and ECU failures are 1;5000 type events in comparison.

smallblackbrick wrote: ↑21 Oct 2022, 12:35Now to deal with the fact that my turbo is underboosting now -_-.

I just made this meme for you.

+1 on the CBV.

Also, a worn beyond repair 15G can easily reduce the max. boost. Ask me how I know. You can usually tell by longitudinal movement of the blade and shaft with the fresh air pipe removed.