ok im doin a b16a swap in a 91 crx si, i need the o2 sensor for the down pipe on the header, some people have told me to find one from a 94 del sol vtec, but the problem is i cant find one in a junk yard or anything and i have been to honda, auto zone and advanced auto lookin for one they all have one but there upwards of a 100$, i didnt know if there is anything else i can look for maybe from another car, or something that might be in the junkyard. thanks

 

I would suggest getting an 02 bung and then welding it into the header b4 the cat... Then wire it up... I have also herd of people just fusing them togeather and only having one 02....

Blaze

 

but what o2 sensor should i be lookin for and from what car?

 

someone help me with this problem, please its the only thing i have to do and then i can fire it up!!!!!!!