Biggu Posted August 3, 2011 Share Posted August 3, 2011 So I put a catless downpipe on my car and flashed to stage 2 on my AP and I was wondering do you need to run a o2 sensor spacer to stop the car from sending a CEL from the downpipe? I thought I read in the map that it disables the rear o2 on the car. I have a 02 spacer on it now but it puts it pretty close to the drive shaft. Looking for some experience here. I may take off the o2 spacer and see what happens. Link to comment Share on other sites More sharing options...
Max Capacity Posted August 3, 2011 Share Posted August 3, 2011 You not have to do anything but re-install the rear O2 sensor in the DP. My catless DP has had the OEM O2 sensor in it since it was installed. What's this spacer you talking about ? I also have Cobb AP but with a custom tune. If your getting a P0134 bank 2, you may have a bad sensor. If you need I have two rear O2 sensors for a 05 GT 5mt for sale. One new OEM and one Aftermarket. I had a P0134 bank 1 and bought the wrong sensor, twice. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
KBGRIZZLY64 Posted April 27, 2012 Share Posted April 27, 2012 Any problems with the spacer without the tune? Say catless dp with spacer still stock ecu? Priorities change when car parts come into the equation Link to comment Share on other sites More sharing options...
Nrw Posted April 28, 2012 Share Posted April 28, 2012 Any problems with the spacer without the tune? Say catless dp with spacer still stock ecu? you NEED a tune for a aftermarket downpipe Link to comment Share on other sites More sharing options...
KBGRIZZLY64 Posted April 28, 2012 Share Posted April 28, 2012 Why is that? Priorities change when car parts come into the equation Link to comment Share on other sites More sharing options...
johnAWD Posted April 28, 2012 Share Posted April 28, 2012 Your tuner can get rid of the CEL after you remove the rear O2 sensor. Link to comment Share on other sites More sharing options...
Nrw Posted April 29, 2012 Share Posted April 29, 2012 Why is that? https://www.google.com/search?q=aftermarket+down+pipe+subaru+do+I+need+a+tune&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a Link to comment Share on other sites More sharing options...
mwm5094 Posted April 29, 2012 Share Posted April 29, 2012 I think the OP is referring to an o2 simulator. But if you install one, you will have a constant p2096 code since the rear o2 can't relate to the front o2 Link to comment Share on other sites More sharing options...
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