02 sim

[firebird19_99]

quick question, does the 02 after the cat in any way affect engine performance. I was talking to the guy at the exhaust shop about putting one in and he said that its fine if i just do it for emissions but not good if i leave it in because it works in conjunction with the o2s by the manifolds and tells the engine if its running too lean or rich?? is he right i thought it didnt affect it

[ssms5411]

Re: 02 sim

It doesn't do anything you can tune it out or use a sim.

[Docta]

Re: 02 sim

I have a sim in mine...

[firebird19_99]

Re: 02 sim

thats what i thought but he says if i put the sim its going to be sending a wrong reading to the engine saying its fine when its actually running too lean or too rich but isnt that what the o2s by the manifolds are for?

[Docta]

Re: 02 sim

The sim reads nothing but perfect codes. It tells the PCM that the rear o2 is reading exactly what the front o2's are putting into it.

[techsan23]

Re: 02 sim

The post cat O2 sensor simply tells the pcm if the cat is functioning properly.

[firebird19_99]

Re: 02 sim

ok so anyone know where i can get a good one?

[bigairboarder44]

Re: 02 sim

Instead of buying an O2 sim, you could get a spark plug non-fouler instead: http://www.s2ki.com/s2000/topic/2299...st__p__4367609

[Docta]

Re: 02 sim

http://www.speedinc.com/catagory.cfm?catagory=Exhaust

Exact link to where I got mine... They're a bit more than half way down the page. I'm going on 12k miles on it, no issues.

[firebird19_99]

Re: 02 sim

tried the link Docta but the page made me put in year and model car but no spot for v6s just the TA/V8s

[Docta]

Re: 02 sim

I see. Then put your year in... o2's are all the same. If they're 4 prong they'll fit.

[Bobd1001]

Re: 02 sim

Im running one in place of that O2 sensor with no problems, that guy dosent know what hes talking about. I know 3800 Permornace sells them, although I think I bought mine http://www.afterthoughtsauto.com/o2sim.html

Pretty positive thats the one I used, with no complaints

[g9m1c]

Re: 02 sim

I got mine from zzperformance.com

[firebird19_99]

Re: 02 sim

thanks guy i thought it was just bs and now i know it was. Thanks for your help im trying to get this to come together right