Yajhershey

I have a 2000 civic with b18c1 bar, it came with dc headers when I bought it, it has a cel for p0133, I looked and there is only one o2 sensor by the cat, the o2 by the headers looks cut by the previous owners, I changed the o2 sensor and checked for exhaust leaked already, they said that my 02 sensor wasn't getting enough air flow, I read that 00-01 integra gsr has 2 o2??? By the cat and headers, I could be wrong but I think my dc header is for obd1 while my car is ob2, do I need the other o2 + my o2 by the cat,or can I relocate the o2 sensor( thats what the shop recommend me to do) or can I put on a stock oem header on? Will I still need another o2 if I put the stock on? I'm getting it from a friend and I don't know the year integra gsr he has, I want to punch my car so bad

Former User

Did you install an OEM primary O2 sensor?

How did you check for an exhaust leak? Maybe you missed one.

Yajhershey

I got my o2 sensor from o rielly for 99-00 civics and had sears auto install it for me a few months back because the old o2 was rusted and to hard for me to take off, I took my car to a muffler shop to check for exhaust leak

carlos8

My DC header for SI 99-00 Have the o2 bung in the collector from factory, I bought it brand new.

If your header not have one the easy way is to buy a o2 bung for $5.00 and weld it in the collector or in the exhaust next to the flange.