Would love the name of the shop or the best 996tt Mechanic in the Los Angeles area to solve a problem that does not want to go away. Problem lots of boost to start, but mostly .4 boost after a few hours pause. ECU upgrade came from CIAG, with standard tune. The diverter valves and n75 boost pressure solenoids have been replaced, the original cats have been replaced with 2/200cell metallic cats. It still has the stock turbos.

The code posted after a drive seems to indicate an electrical malfunction, the code reads boost solenoid circuit.
Thanks Karl Dempwolf dempwolf@pacbell.net

 

Call Tony Callas at Callas Rennsport in Torrance, Ca.

 

Dan Aspesi at Speed Gallery in North Hollywood.

 

and Sam By Design https://www.bydesignauto.com/