If you return, use the chip and tune. Don't try to use a FMU for 8psi on motor not made for boost.
Fmu may work for lower boost, or on motor with stronger bottom end (if money is spent on bottom end might as well get better tune with chip anyway). I also second above people, don't post phone# on forums, and quick search would have answered your question long before any one responded, let alone texted you. When in doubt, search.
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