Do I NEED to put a new O2 sensor in?
 

I have a 93 civic ex with a d16, I'm making my own dp and Manifold, not sure where the O2 sensor goes...I think the dp, but when I make my own, do I need to get an O2 bug from a muffler shop and weld it in so I can put my stock O2 sensor in? Or just not put one in at all?

Re:Do I NEED to put a new O2 sensor in?
 

your o2 sensor is a must if you drive your car every day. 98ctr

PS: you can put it in the down pipe or anywhere after that.

Re:Do I NEED to put a new O2 sensor in?
 

Yes u need to put your o2 sensor in. You can put it anywhere on ur manifold after all 4 runners. if u wanna make things hard and drill it and tap it that is. The easiest way would be to get an 02 bung and weld it on ur downpipe.

Re:Do I NEED to put a new O2 sensor in?
 

dp it is then....

Re:Do I NEED to put a new O2 sensor in?
 

I know it doesn't seem right, but I'm running with my o2 just hanging in the air, and it isn't even throwing a code. I expected it would at least run super rich, but it seems to be pretty much ok. The idle is a little messed up, and that could be related to the o2 I suppose, but it doesn't feel like it is super rich. Oh well, I don't have a wideband so I dunno. I'm going to get it welded into the dp as soon as I can get to it. But it is definately driveable.

Re:Do I NEED to put a new O2 sensor in?
 

You may want to check and make sure you can get your 02 sensor out. Mine is stuck for good and I had to buy a new one.

Re:Do I NEED to put a new O2 sensor in?
 

vice grips and a mallet is how i get out 'stuck' o2 sensors ;D

Re:Do I NEED to put a new O2 sensor in?
 

I tried everything... Wrenches, breakerbars, vice grips, hammers... Even the tool that's made specifically for taking the damn thing out didn't work :P I got the new one from Ebay for $50 (4 wire)

Re:Do I NEED to put a new O2 sensor in?
 

the tool works every time for me....sure you didnt strip it out trying it with the wrong tool first?

Re:Do I NEED to put a new O2 sensor in?
 

"the tool" doesn't even fit onto the sensor correctly and was the only thing that actually started to strip it. :-*