GFB Issues....STILL

Okay, so I adjusted the spring, tightened it all the way and backed it out 2 full turns. At 50/50 vent, still getting the drop in boost and the same CEL. I'm not giving up, but would like to hear from ANYONE who has a GT Manual that has this setup that has gotten it to work without the CEL.

To be clear, it's fine as long as I don't drive it hard. Once I do, that's when it throws the code.

This may be a weird question, but if you are running a piggyback, would it actually intercept that signal, and is anyone running both a piggyback AND the GFB on a 6sp?