o2 sim

[sishocker04]

cant find the DIY o2 sim. help anyone?

[talonXracer]

Go to Auto-Zone and purchase a set of sparkplug defoulers. They should have a m18 1.5 threads.

You now take one of those and drill it completely thru(or grind the closed bottom off). Now after applying anti-sieze to the threads assemble the sim in this order...O2 sensor goes into the drilled out defouler, that gets threaded into the unmolested defouler, and that whole mess gets threaded into the rear o2 sensor bung.

What this does is isolate the secondary o2 sensor from direct contact with the exhaust gasses, thusly fooling the ECU into thinking there is a working cat installed. The secondary o2 sensor only measures the temp drop after the cat.

[sishocker04]

cool thanks =)

[boyurlazy]

http://www.energeticforum.com/renewable-energy/1387-o2-sensor-modification-using-spark-plug-non-foulers.html


basically same as the one that enjanir i believe posted...


i am doing same since i dun have a cat on

[kwiksi]

Nice info.

[trogdor48430]

has anyone done this, any feed back?

[L337Ep3]

has anyone done this, any feed back?

Tons of people have used this to fool the ECU. I haven't ever heard any complaints.

[Chazwick05]

has anyone done this, any feed back?

i've been rocking one for a couple years now with no complaints!

[william]

Also if you have a problem with clearance (the o2 sensor is hitting on the heat sheild/ bottom of car, you can always shell out $30 and get a mechanical O2 sim from ebay with a 90degree bend in it. It gets my thumbs up aproval.