so from what i understand:
throttle bodies=everything is good
lower mani-you paid for porting only and sent him yours back in return=done
upper mani-you paid for m370+porting,
you received defective product, a good company will give you a replacement or money back since it was their fault for giving you a bad product, but you returned it plus your m370 mani,synergy sends you oem ported mani, you will return you oem mani===
m370+porting-defective product (m370+porting)+porting oem mani=he owes you money and you will need to send your oem mani back after
with numbers (correct if wrong)
==430(m370)+245(porting)-675(defective product)+245(oem porting)=
$430(they need to refund you)
-You will need to send your oem mani to them
-they will need to send your M370 mani back to you
