so iv just put on a apexi ws2 with a cat replacement and im getting the bung put in the pipe this week or next not sure but i just did a fix to a 04 subaru wrx and he needed a resistor on the white wire im wondering when i sauder myne back on if im going to need this i have a CEL now and its dumpen gas... not a very happy me... if anyone can give any help of a wiring fix of if i dont need one even tho i have no cat id apreciate it