Quote:
Originally Posted by Hicompression
If you are speaking of wire extensions, no, the stock harness reaches the rear O2 sensors just fine with either Kooks or OBX longtubes.
2500 miles and counting. No CEL.
That won't do anything. You need to run 2" long sparkplug antifouler style O2 extenders (not extensions).
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I think if you do not have the 2" long sparkplug antifouler style O2 extenders then you need the harness extension. I needed them for mine with OBX. But the 2" extenders pull the sensor out of the exhaust stream to keep you from have a cel light with no tune. For anyone that wants to learn more about this, do some research in google then make a decision.