Possible causes of my boost gauge to go crazy?
Reads vacuum just fine. As I go into boost it starts fairly steady but as RPM increases, the needle bounces around like crazy!
I've confirmed BOV operation.
Wastegate has been removed and disassembled for inspection. I changed the spring to be sure that wasn't the fault. Also checked operation with air pressure.
No vacuum leaks.
Charge pipe and carb hat are sealed.
Everything is tight.
I'm at a total loss!!!