alright, so i got this brilliant idea. You see, I wanna test pipe, but I dont wanna pay 3,000 dollars if i get caught with it. So i bought a stock cat convertor for 30 bucks and im gonna punch out all the honeycombs inside. Now I've got a free flowing cat that will inspect visual if i get pulled over. Then every two years for smog i can swap my normal one back in.

Now here's my question: with the exhaust going straight through, is it gonna trip anything on my rear o2 sensor? if so, what will it do, i can't remember which o2 sensor is the one that controls the fuel. Thanks for your help.

 

yes, it will throw a code, probably for rich

 

upstream controls fuel, downstream will have a slight roll in it, but is mainly used for cat efficieny? your car will probably run a little bit poor, but not bad

 

Yes, you wil get a cel from that...
No, thats not an original idea

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pdiggitydogg &raquo;</TD></TR><TR><TD CLASS="quote">Yes, you wil get a cel from that...</TD></TR></TABLE>

Dammit

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pdiggitydogg &raquo;</TD></TR><TR><TD CLASS="quote">No, thats not an original idea</TD></TR></TABLE>

Well, there goes my glory


then how do test pipes not throw cels?

 

they do

 

once again, dammit.

Is an o2 simulator the only way i can make it work, and if so where can i find one? I searched froogle and got some results but it was pretty inconclusiv, couldnt tell if they would work on my car or not

 

pretty much, unless you can make it have a constant voltage of like .75-.80

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dave The Flave &raquo;</TD></TR><TR><TD CLASS="quote">once again, dammit.

Is an o2 simulator the only way i can make it work, and if so where can i find one? I searched froogle and got some results but it was pretty inconclusiv, couldnt tell if they would work on my car or not</TD></TR></TABLE>
i have been running my car using your brilliant idea for a while and i have a o2 sim from kteller.com and it works flawlessly not a single problem.
peace
eric

 

You could also try wrapping your 2ndary o2 in aluminum foil, and leave it hanging outside the bung. Ive never tried it, but Ive heard it works.