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i just installed me new exhaust a few weeks ago and when putting in the new prochamber, i was only able to get 3 of the 4 02 sensors connected. the fourth one, i didn't have enough slack in the wiring to screw it in. anyways, my check engine light just came on the other day, but the car seems to be running fine. what is the probability that it's just b/c my 02 sensor isn't connected????
is it catted or o/r prochamber? and which 02 sensor is it?
A)Driver side before cat
B)Driver side after cat
C)Passenger side before cat
D)Passenger side after cat