Thread: Homebrew O2 Simulator - Simple and cheap and effective
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Old 09-01-2004, 11:22 AM   #1 (permalink)
marcucci
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Join Date: Mar 2001
Location: Dallas/Fort Worth, Texas
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Homebrew O2 Simulator - Simple and cheap and effective
I haven't tried this on a 5g, so don't bother asking me if it works. What I can tell you, though, is that it works on the S2k which has much pickier electronics when it comes to secondary O2 (cat) performance.

This comes from this thread at S2ki.com:
http://www.s2ki.com/forums/index.php?showtopic=229959

Quote:
Originally posted by SLO-S2000
Ok...I got this tip from some of the local car enthusiasts...and this is one cheap O2 simulator.

It works, and there is no need to cut any wires or anything...very easy as well.
I personally have driven about 300 miles since, no CEL. So anybody who wants to run a test pipe...here is the mod you should do to stop the CEL...don't bother with the electronic ones with only some of them working...and not working all the time. These pics are from it being done STi, but I did it on my S, works just the same.







Those are the Spark plug, Anti-Foulers you'll need to do this..just pick them up at any auto parts store.
This modification effectively reduces the amount of exposure the secondary O2 has to the exhaust stream. This mod will allow the 5g and '96 4g guys to avoid the CEL for poor cat performance without having to do the dubious OBD2 "workaround" and pass OBD2-based emissions testing.
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