02 sensor in cat?

[da1990]

wats up ctvtec
im planning on installing a cat back exhaust system on my 2000 integra
the header i am planning to get has a place for the 02 sensor
the cat on new exhaust doesnt
seeing that i have two 02 sensors
one in the header and one in the cat
what can i do with the 02 sensor that goes in the cat?
is there a way to block it off?
or do i need to get a hold drilled for the o2?

any info helps
thanks in advance

[crzycivic93]

U need both o2 sensors hooked up or else u'll fail emissions. Shoulda got a cat with the o2 sensor hole....

[Mowgli]

If the cat back does not come with an o2 bung then one would need to be welded on. But it begs the question of is it a super cheap exhaust or is it for the obd1 integra? Check to make sure you are receiving the correct one.

[da1990]

its a yonaka full cat back

[Mowgli]

Got a part number?

[da1990]

http://www.ebay.com/itm/Yonaka-Acura-Integra-94-01-LS-RS-GS-Performance-Catback-Exhaust-Muffler-DC2-2DR-/140894741746?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3AIntegra&hash=item20cdfb24f2&vxp=mtr

[da1990]

any idea what is cost to have a bung welded? into the cat

[Mowgli]

Maybe $50. Email the people selling the exhaust and just ask them if the cat back has a bung for the downstream o2 sensor. They should be able to tell you.