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need Evo 9 owner to test rear O2 *heater* sim patch

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Old Feb 14, 2009, 03:27 PM
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Kracka and I tried this on his car today; it works! He's spending QT with is girl right now but just wanted to relay the message: he had a big smile on his face when we ran the car w/ the old resistor crap unplugged
Old Feb 14, 2009, 03:31 PM
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LOL thanks Scheides! She thinks I'm looking up moves right now

Works perfectly though, thanks mrfred!
Old Feb 14, 2009, 04:40 PM
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Originally Posted by S2kracka
LOL thanks Scheides! She thinks I'm looking up moves right now

Works perfectly though, thanks mrfred!
Glad there's no CEL. When you get a chance, can you check the readiness status of all the OBD-II tests? Just want to be sure that everything has completed.
Old Feb 15, 2009, 04:42 AM
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Heh he's got all his emissions stuff off the car and unplugged per another thread....this will be interesting

I'll try it out on another more stock IX very very soon regardless
Old Feb 15, 2009, 06:45 AM
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For those using a antifouler does this patch mean that they can remove the rear o2 sensor completely and put a plug on the pipe where the old antifouler and o2 sensor used to be?
Old Feb 15, 2009, 07:02 AM
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Unless I'm mistaken, This patch by itself will not allow that because it only simulates the heater circuit, however in tephra's V5.10, there is an O2 sensor that simulates the signal, so together they will allow you to unplug.
Old Feb 15, 2009, 07:36 AM
  #67  
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Originally Posted by THUB
Unless I'm mistaken, This patch by itself will not allow that because it only simulates the heater circuit, however in tephra's V5.10, there is an O2 sensor that simulates the signal, so together they will allow you to unplug.
That's correct. I also have a standalone patch to simulate the rear O2 sensor signal for the 88590015, or a tephra ROM can be used. tephra mentioned somewhere that he is holding out on releasing v6 for this patch.
Old Feb 15, 2009, 09:23 AM
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I believe my IX has that rom. So could I use both patches to completely eliminate the rear o2? Maybe I not understanding this patch but why would you need just the heater? My antifouler works just fine.Excuse me for my lack of understanding.

Last edited by PlanoEvo; Feb 15, 2009 at 09:28 AM.
Old Feb 15, 2009, 10:23 AM
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Originally Posted by PlanoEvo
I believe my IX has that rom. So could I use both patches to completely eliminate the rear o2? Maybe I not understanding this patch but why would you need just the heater? My antifouler works just fine.Excuse me for my lack of understanding.
Yes, that's correct.
Old Feb 15, 2009, 12:46 PM
  #70  
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Originally Posted by mrfred
Glad there's no CEL. When you get a chance, can you check the readiness status of all the OBD-II tests? Just want to be sure that everything has completed.
How do I do this in EvoScan? Let me know and I'll head down to the garage now.
Old Feb 15, 2009, 01:05 PM
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what would be needed to eliminate the rear o2 and remove the pin supplying the data to the ECU. i would like to have the ECU log AFR's from my LC-1 wideband
Old Feb 15, 2009, 06:24 PM
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Originally Posted by vmrevo9
what would be needed to eliminate the rear o2 and remove the pin supplying the data to the ECU. i would like to have the ECU log AFR's from my LC-1 wideband
Apply this patch along with my wideband AFR logging patch.
Old Feb 16, 2009, 10:30 AM
  #73  
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this: https://www.evolutionm.net/forums/5353216-post148.html

except not using the hardware (resistor mod) in conjunction with the newer patch posted in the first post and no rear o2 all togather with all readiness tests 100% a-okay.
Old Feb 16, 2009, 11:10 AM
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I'm foaming at the mouth for V6 now!
Old Feb 16, 2009, 05:43 PM
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well removing the rear o2 sensor completely from the car be necessary when one has the 2 antifoulers installed with the sensor? resaon i ask is so just in case i need to bring it in for warranty work i can return it easily to stock


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