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Originally Posted by tuanle16
what year did the boxster come out with the exhaust system that has 4 catalytic convertors as opposed to 2? and why? are they interchangeable? ie.. i have a rattle in my rear most right cat of the 4...can i purchase from a boxster that has only 2 cats and replace it? will it fit? how do i plug the oxygen sensor hole?
thanks for any advice.
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MY 2000 is when the standard box got a 2.7 motor. At this point, they all recieved 4 cats in USA spec. I think they did this due to emissions restrictions...
See the attached link from 2007. J.Fro does a great job of commenting here.
http://www.986forum.com/forums/showthread.php?t=11860
So after reading that, you need to go back to a pre-2000 or just get rid of the cats altogether. I did and I love it! You do NOT have to reflash DME either. I have a mechanic in Nashville, Tn that can do it with no additional DME mods.
Here is a couple of other options out there too... They do cost though...
http://www.design911.co.uk/fu/pt63_399_-cma81-cmo82-ct287/Porsche/Boxster/Boxster-986-25L-1997-99/Catalyst---Bypass/
http://www.design911.co.uk/fu/pt63_620_-cma81-cmo82-ct287/Porsche/Boxster/Boxster-986-25L-1997-99/Exhaust-Package/