I'm planning on buying a test pipe from here for my '01 OBDII GS.. http://www.kteller.com/store/p...d/211

They have the option for (2) O2 sensor bungs, but from what i've read, i'll still need an O2 simulator correct? I'm kinda confused on all the stuff regarding a test pipe and what needs to be done if you get one.

 

not sure if this'll answer your question, but i'm running a test pipe on my obd1 gsr.... i had one o2 bung on my test pipe, plugged in my o2 sensor in that bung, and worked perfectly fine.... no codes or anything. I think you would only want a simulator if you didnt want to plug in your o2 sensor.... not sure how it is with obd 2

 

Well from my understanding, with OBD2, there is an O2 sensor before the cat and an O2 sensor after the cat and the second one is what people were having problems with.

 

Will a highflow cat make the exhaust any louder?

 

Also, if I were to get a CEL, would it really matter and could I just ignore it?

 

u need a simulator cuz ur secondary o2 is gonna be all thrown off. I'd suggest a high flow cat but even with that u still might get a CEL

 

The purpose for the 2nd o2 sensor is for the computer to see if the cat is doing its job. It has no other purpose except to check for emissions. All OBD2 cars have them. I know that all over the Ford sites you can find places to purchase MIL eliminators. I'm not positive how it works but I think it has a capacitor in it that you wire in to the O2 sensor wiring. It tricks the computer by sending it a different voltage than the first o2 sensor (upstream of cat). If the 2 sensors send back the same signal then the ecu knows that the cat is gone and it may put the car into a limp mode or closed loop (at least thats what it does to fords)

I know that you can purchase the parts at radio shack to make one of these MIL eliminators for something like $7

Hope that helps a little bit

 

thats very true. i work at a muffler shop and thats the main reason why we dont staight pipe OBDIIs. we striaght pipe OBDIs all the time (sshh) with no prob.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TODA GS_R &raquo;</TD></TR><TR><TD CLASS="quote">thats very true. i work at a muffler shop and thats the main reason why we dont staight pipe OBDIIs. we striaght pipe OBDIs all the time (sshh) with no prob.</TD></TR></TABLE>

so with high flow cat with o2bung will not throw any codes?

also if i use test pipe, tell me more about how to- the cheap way.

 

i have a 2.5" high flow cat and a fireball exhaust, no problem with any cel. 99 gsr btw.

 

this setup works perfectly fine...i would recommend this way with obd2. the cheapest way? well if you have your stock exhaust piping...what you can do is buy a highflo cat like the guy above then got to a shop to straight pipe your resignator (pretty much for noise control) and pickup any after market muff.

i just save money buy bending my on piping (non mandrel with aluminized piping 2.25) if sum1 decided to get full piping at my shop...itd probably run bout...$100

 

No one answered this yet..

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaTeg6 &raquo;</TD></TR><TR><TD CLASS="quote">Will a highflow cat make the exhaust any louder?</TD></TR></TABLE>

 

bump

I would like to be able to order this today..

 

a high flow cat should keep it pretty quiet, but freeing up the exhaust is going to make it louder either way for the most part

 

I guess my main question is if you did buy the test pipe with the 2 O2 bungs, it would still create a CEL?

 

yes you would need the kit to trick the ecu into thinking you cat is working otherwise you get a CEL and limp mode

 

Anyone know where to get a cheap O2 simulator then? Also, where does it mount?

 

Anyone?

 

another thing you could do which was what i did was do a obd1 conversion. all you need is a obd1 vtec ecu a conversion harness and your set. any questions or porblems let me kno. i also have a test pipe on my car. obd1 is much better!

 

i had a dc header to highflow to exhaust and threw no codes on my odb2 teg

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vi3tboy &raquo;</TD></TR><TR><TD CLASS="quote">another thing you could do which was what i did was do a obd1 conversion. all you need is a obd1 vtec ecu a conversion harness and your set. any questions or porblems let me kno. i also have a test pipe on my car. obd1 is much better!</TD></TR></TABLE>

About how much would all of that cost and where can you get it from?

 

find a ecu wherever. they go for 40-100 bucks. then find a conversion harness which should run you around 60-75 bucks. conversion harness i found locally.

 

Hope this helps out. https://www.casperselectronics...honda

Also I did a Search at Team-Integra.net They had some helpfull insight to your questions...

 

well your saying that the ECU will throw a CEL if the Primary and secondary O2 sensors are showing the same voltage? so how about u make a voltage divider with resistors on the secodnary O2 sensor wire by the ecu so it tricks the ecu into seeing a different voltage. (which O2 sensor usually sees a higher voltage? the PO2 or the SO2? which ever one sees the lesser of the voltage put the voltage divider on that wire.)

 

its really not that easy...like vietboy said...just convert to OBDI