Test Pipe?

[lax01]

LOL.

ummm ok....because that makes sense...

[azinwa]

The VA Dept of Ecology love's people like you.

Bert

[Karlson]

The VA Dept of Ecology love's people like you.

Bert

oh please, our state god stupid laws! all subie people throw flames, so now how about volvo....

[trgft]

yes, last saturday, The Evo,Sti, and S13 were throwing flames all night on I-270.

[01S6024T]

I want to take the cat out of my S60. What to do with the O2 sensors and the check engine light? I remember I've seen someones signature says "no cat", so there must be some way to go around it.

help me out.

I am not sure what type of O2's we have for the second sensor. I do know most vehicles have narrow band O2's. And if it's narrow band you can get what the "Mustang guys" call "MIL eliminators" (Malfunction Indicator Light, better know as CEL Check Engine Light, here) Or what the "import guys" call "O2 simulators" or "Cat simulators".

Basic to explain it in short. The narrow band O2 has a range of output like 300-600mv. And the "Mil eliminator" is a capacitor and resister combination. To alter the rich 600mv signal to normal 450mv and on some brands lean 300mv. Therin simulating a functional emmissions system. All it will do is curve the the signal. Should your car run lean the ecm will see it as very lean. And if it starts running rich it may see it as normal to rich. All dependent on which simulator output is used.

If I were to do this. I would look for the normal 450mv output. Otherwise you will just waste fuel in idle and part throttle cruise. Because most ecm's don't bother taking emmissions controls (2nd o2 readings, egr is closed, etc) in to account while at full throttle.

[ziddey]

I am not sure what type of O2's we have for the second sensor. I do know most vehicles have narrow band O2's. And if it's narrow band you can get what the "Mustang guys" call "MIL eliminators" (Malfunction Indicator Light, better know as CEL Check Engine Light, here) Or what the "import guys" call "O2 simulators" or "Cat simulators".

Basic to explain it in short. The narrow band O2 has a range of output like 300-600mv. And the "Mil eliminator" is a capacitor and resister combination. To alter the rich 600mv signal to normal 450mv and on some brands lean 300mv. Therin simulating a functional emmissions system. All it will do is curve the the signal. Should your car run lean the ecm will see it as very lean. And if it starts running rich it may see it as normal to rich. All dependent on which simulator output is used.

If I were to do this. I would look for the normal 450mv output. Otherwise you will just waste fuel in idle and part throttle cruise. Because most ecm's don't bother taking emmissions controls (2nd o2 readings, egr is closed, etc) in to account while at full throttle.

From what I've read, no one's been able to get those to work well with motronic 4.3/4.4 so nevermind me7. I believe it demands different response values at times and if it's a static, you'll run into issues

[01S6024T]

From what I've read, no one's been able to get those to work well with motronic 4.3/4.4 so nevermind me7. I believe it demands different response values at times and if it's a static, you'll run into issues

I am not sure on how reputable this company is Baker Electronix. But I saw a product there, that they call PSO2SIM which bases its 2nd O2 simulation off of actual primary O2 readings. It seems interesting to say the least.

I also saw a few devices like the "fix" here at Innovative Performance & Customs, and the same at Road Race Engineering. That pulls the O2 from direct exhaust flow (good pic in the evo section). I am not sure how much that works if at all. I did read that on 04 and newer wrx's it doesn't. I am pretty sure your motronic comments would apply here. I just thought I would mention this stuff since I saw it tonight.

[ziddey]

hmm the idea about based rear o2 data from the first is great. maybe that'd work?

[01S6024T]

hmm the idea about based rear o2 data from the first is great. maybe that'd work?

I just found a DIY on the mechanical fix if anyone is interested: Mechanical O2 Sim fix

[Gioseppe]

Basic to explain it in short. The narrow band O2 has a range of output like 300-600mv.

If I were to do this. I would look for the normal 450mv output. Otherwise you will just waste fuel in idle and part throttle cruise. Because most ecm's don't bother taking emmissions controls (2nd o2 readings, egr is closed, etc) in to account while at full throttle.

you don't know what you're talking about.

[Karlson]

I just found a DIY on the mechanical fix if anyone is interested: Mechanical O2 Sim fix

in first, it is a repost.

second, you have to search, we discussed tons of pages about spacers. Josh(lax01) was first one who found a link on ebay, we thought it would help, couple people bought the spacer,including me, but it DOESN'T work. Volvo software is smarter than just a stupid o2 spacer.

[01S6024T]

you don't know what you're talking about.

I am not trying to start a flame war or be the manors police, but real mature comment. As if you even know what we are talking about. If you had any input worth typing you should have done so. I.e. the reason people post in forums, to share knowledge, thoughts, ideas, theories and to prove or disprove any of the above.

Here is a section quoted from Wikipedia

"Zirconia sensor

The zirconium dioxide, or zirconia, lambda sensor is based on a solid-state electrochemical fuel cell called the Nernst cell. Its two electrodes provide an output voltage corresponding to the quantity of oxygen in the exhaust relative to that in the atmosphere. An output voltage of 0.2 V (200 mV) DC represents a lean mixture. That is one where the amount of oxygen entering the cylinder is sufficient to fully oxidise the carbon monoxide (CO), produced in burning the air and fuel, into carbon dioxide (CO2). A reading of 0.8 V (800 mV) DC represents a rich mixture, one which is high in unburned fuel and low in remaining oxygen. The ideal point is 0.45 V (450 mV) DC; this is where the quantities of air and fuel are in the optimum ratio, called the stoichiometric point, and the exhaust output will mainly consist of fully oxidised CO2.

The voltage produced by the sensor is so nonlinear with respect to oxygen concentration that it is impractical for the electronic control unit (ECU) to measure intermediate values - it merely registers "lean" or "rich", and adjusts the fuel/air mixture to keep the output of the sensor alternating equally between these two values.

This type of sensor is called 'narrowband', referring to the narrow range of fuel/air ratios to which the sensor responds. The main disadvantage of narrowband sensors is their slow response: the control unit determines the exhaust gas composition by averaging the high and low swings in the sensor's output, and this process creates an inevitable delay."

That is true of the mass majority of narrow band sensors avalible. Should you have any document to say the contrary I would love to see it. I shouldn't be hard to beat an online encyclopedia for crediblity. As you can read about above or click the link to. The only recommendation I made was to 450mv stoichiometric, and that is what ecu / ecm's in general aim for. I never made claim to to any of the devices working on the me7 I just said the original poster may want to take a look into the (do some research). True there is more range to the sensor than I posted, but those voltages are well out of any accuracy (the reason every OEM has gone to "Wideband" for primary o2).

[01S6024T]

in first, it is a repost.

second, you have to search, we discussed tons of pages about spacers. Josh(lax01) was first one who found a link on ebay, we thought it would help, couple people bought the spacer,including me, but it DOESN'T work. Volvo software is smarter than just a stupid o2 spacer.

Thanks for notifying me about that the spacers don't work. I never claimed they did, maybe you should reread the post you quoted, as I wrote:

"I am not sure how much that works if at all. I did read that on 04 and newer wrx's it doesn't. I am pretty sure your motronic comments would apply here."

But wether or not I search the forums all day and night about the spacers doesn't mean. The originator or any one following this thread (over 450 views while I write this) would have had the spacers brought to their attention to devalidate them. Should you be so conserned little reposts in current thread. Maybe should post links to the first time discussions of any related items. For sure that's better than barking out search and finding a way to flame an idea on a thread that already had over 20 posts.

[JLT]

yes, last saturday, The Evo,Sti, and S13 were throwing flames all night on I-270.

i told you at altered that you can try the non-fouler trick - it works for us 350z/g35 people so why not a volvo person???? we have wideband o2's stock tho... i thinks....

one question i have is where did all the sand come from that im finding in yalls vagins. seriously, everyone is constantly bitching on this forum about "previously" answered stuff. if you feel that way - why dont u just not bother replying. the person will eventually realize that he/she must search - why be all like "shoulda used the search function" - i think perhaps the answer is this is a forum for discussing topics, and just because a topic is discussed at one point in time - does this mean that it cannot be revisited or rediscussed with different impressions by another set of people? i guess this is what happens when you leave something for +1 year and then revisit it - it gets f'd up!

[Karlson]

i told you at altered that you can try the non-fouler trick - it works for us 350z/g35 people so why not a volvo person???? we have wideband o2's stock tho... i thinks....

one question i have is where did all the sand come from that im finding in yalls vagins. seriously, everyone is constantly bitching on this forum about "previously" answered stuff. if you feel that way - why dont u just not bother replying. the person will eventually realize that he/she must search - why be all like "shoulda used the search function" - i think perhaps the answer is this is a forum for discussing topics, and just because a topic is discussed at one point in time - does this mean that it cannot be revisited or rediscussed with different impressions by another set of people? i guess this is what happens when you leave something for +1 year and then revisit it - it gets f'd up!

Jordan, you were away for a year or so, and now u are complaing to us. we have to deal with same crap almost everyday, when people ask exactly the same question 10 times, some people don't even want to search, and it is not that difficult. The subject about rear o2 sensor been disscused so many times, thats not even funny. I am personally had 1-2 threads about it.