O2 sensor after the Cat

[flyfrito_SS]

I have a 98, and when I was putting on my exhaust, I decided not to do the S pipe, becasue of the O2 sensor and my lack of knowledge about it. I was thinking of doing it when I get a new Cat, and just taking it to a shop to do it. Would that be expensive? I know the S pipe is a major bottleneck so I want to do it, but is it hard to take out the O2 sensor and put it back in?

[slow6]

Re: O2 sensor after the Cat

i wouldnt say its a major bottleneck

[flyfrito_SS]

Re: O2 sensor after the Cat

Well, when I get the whole system done, it will be.

[xcdarrel17]

Re: O2 sensor after the Cat

i wouldnt say its a major bottleneck

a 2.25in pipe that is shaped with the sharp curves of the stock exhaust... It's definetely not a free-flowing area.

[lookout4theyeti]

Re: O2 sensor after the Cat

if you have 3" piping into the s-pipe, and then 3" piping after, or even 2.5", i would definitally agree that the s-pipe is a major bottleneck being the stock 2.25".

[flyfrito_SS]

Re: O2 sensor after the Cat

Ya, but is that 02 sensor hard to take out and put in my new one? Should I just have a shop do it when I get my Cat?

[BLLDOGG]

Re: O2 sensor after the Cat

well, its not hard to take it out and such but the new piping will need the bung in it which they would need to weld it into the piping.

[flyfrito_SS]

Re: O2 sensor after the Cat

O.K so I will just wait untill I get my Cat, and have a shop do it..... Thanks!

[Harrison]

Re: O2 sensor after the Cat

tell you what, this will save you a lot of time and worrying. Go get piping to make the S-pipe, or buy the one SLP offers, and go buy yourself a 25$ o2 simulator. No need to worry about putting a bung into the s-pipe or worrying about that sensor when it throws a code after you do your exhaust. You will have a 85% chance of throwing a code with a highflow cat, so get an o2 sim and kill two birds with one stone. The more effort a shop has to put into the work, the more they will charge you. If they only have to cut the pipe in 2 places and weld it, you can get out of that shop with only spending around 50$. You can put the o2 simulator on yourself, its as easy as unplugging a connector, and pluging the sim back into it.