[blinkwatt]

Originally Posted by zackwatt

Hold on there buddy....

From what I understand, The CEL comes on because the OEM setup has two O2 sensors at the end of the headers, one before the cat and one after. The Maxspeed headers only have a bung for one 02 sensor each. So, now you have one O2 sensor on each side that is "inoperative" or not receiving any reading and that will throw a CEL.

According to Maxspeed the permanent fix is:

"....you will need to relocate the 2nd O2 sensor right after the 2nd set of cats that also involves extending the wiring on the O2 sensors. This is the permanent solution. We can help you with this solution just ask we have the O2 weld sensor bungs to relocate."

This sounds like a good fix to me

From Maxspeed's auction;

Q- You say "it will fit all Boxsters regardless of O2 Sensor configuration" how could that be?

A- For 2.5L Boxster you will leave the O2 plug screws in place, simply tighten them and install the headers, the 2.5L headers don't have O2 sensors on the headers.

For 2.7L & 3.2L the factory O2 sensors will fit into the headers , thats 2 x O2 Sensors on each headers.

Q- On the 2.7L & 3.2L will these headers trigger C.E.L (Check Engine Light)?

A- As mentionned above we have tested these headerson a 2002 2.7L Boxster and we had the C.E.L light came on 3 times always with the same code that has occured on a 3000 Mile testing , this is caused by the deletion of the primary cats, in return they are noticeable power gains and improved sound. So yes on the 2.7L and 3.2L the C.E.L will possibly come on.

Q-What can be done to resolve the C.E.L ?

A- Two things can be done, either you purchase a Scanner to erase the light when it comes on. Thats what I do I purchased a nice scanner online and its a great tool to have. Or you will need to relocate the 2nd O2 sensor right after the 2nd set of cats that also involves extending the wiring on the O2 sensors. This is the permanent solution. We can help you with this solution just ask we have the O2 weld sensor bungs to relocate.

Why would you need to relocate the 2nd set of o2 sensors? The o2 sensor positioning isn't something to be messed with on these cars.

Get some headers by Fabspeed,Gembella,evo or imagineauto. None of which i heard trigger a CEL on the e-gas.

Maybe Che could chime in on the o2 configuration considering his e-gas headers are out.
http://cgi.ebay.com/ebaymotors/Porsche-Boxster-986-2-7L-3-2L-Exhaust-Header-Headers_W0QQcmdZViewItemQQcategoryZ33630QQihZ020QQ itemZ300147056064QQrdZ1QQsspagenameZWDVW