So, just got done rebuilding my engine, s4 na rotors and 4 port irons, and planning on a decent turbo setup so I grabbed some Bosch 1680s. My plan, and also my question, is to run my factory high z injectors on the ms3x and stage the Bosch low z injectors on the main board. I've read that the main board can run low z but I don't know if/how it would work on a staged setup. Any input is greatly appreciated. Thank you.

 

should work.