Double check ALL of your clamps. Get a socket on them one more time and turn them then reload your map and see if it makes a difference. It's also possible you're leaking boost through your symposer. I deleted mine within the first year so I couldn't tell you how to test it. Whoosh sells the delete for very cheap:
https://whoosh-motorsports.myshopif...sd-kit-silicone-symposer-delete-free-shipping
Can be had for $19 shipped to your door with the forum discount
https://whoosh-motorsports.myshopif...sd-kit-silicone-symposer-delete-free-shipping
Can be had for $19 shipped to your door with the forum discount