Quote:
Originally Posted by mikefocke
But why replace 4 when only one is failing?
You can make an argument for the two matching fronts (they usually are the first to fail) just because they get the same exposure and the car is on the lift and the muffler system is cool and you may save money (PS, any muffler shop can do a single O2 sensor for 20 minutes of labor, no special Porsche tools/knowledge needed. The local muffler shop did mine.).
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The car now has 117k miles on it. I'm sure they are the original O2 Sensors. I didn't take the time to check each one individually with the Durametric tool, but the tool reported in the ready status that my O2 Sensors failed. I do all my maintenance, no need for me to take it to a muffler shop. I have the proper tool you need to remove and install them properly.
 http://www.ebay.com/itm/271561301844?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
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2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
Last edited by KRAM36; 04-17-2015 at 10:47 AM.
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