WORKS, I'm having a machine shop port my Exhaust Manifold and O2 housing and wanted to make sure it's not going to cause any problems with my P2 Flash. I'm only porting the exhaust manifold to match the gasket and smooth out the surface of the runners. Any advice or warnings?

 

You should not have any issues but since porting is not an exact science we may need to adjust your flash if your boost is affected.