IAB opens around 7 grandish, if I recall. Vtec a litle over 5, I think.
there might be some missing sensors between the JDM/USDM ecu/computer, are you going same market for the ecu?
Like I don't think jap motors have the EGR solenoid, and maybe a knock sensor where USDM doesn't or vice versa...
-PHiZ