Rear 02 sensor

[sleepydsm]

I've got a '95 Tsi AWD. I know nothing about 2Gs. Do you need the rear o2 sensor? Without it will it throw a CEL? Is there any way to eliminate it, or trick the ECU into thinking it is still there? Do performance exhausts have a bung for the rear o2?

[Kracka]

W/0 the rear o2 sensor you'll throw a code, but it won't have any performance affects besides a red light staring right back at your face. Cat-back exhausts have nothing to do with the rear o2, it is all in the cat, you'll loose the bung if you get a test-pipe. With a test-pipe you can either live with the light, get an electrical simulator, or make a mechanical simulator

[Khadgar]

http://vfaq.com/mods/O2bypass.html

[sleepydsm]

thank you!

[blageo23]

Has anyone done that? Im searching around trying to find out what to buy for resistors and what not. Does anyone know what I need to buy? Or pictures of what I need to buy.
Thanks,
Mike

[blageo23]

Come on there has to be someone out there that has done this before. I have tried but the resistors keep smoking and burning up. NEED HELP!

[Khadgar]

I would try PMing Lightning GSX, he knows his stuff and has talked about elminating other sensors in a similar manner.

[LightningGSX]

Like I was saying in the PM, the ones from Radio Shack are usually 1/4 watt carbon film types.You'll need at least a 12 watt resistor, which will be a wirewound type, and I doubt Radio Shack will have it.This one should work-

http://www.mouser.com/index.cfm?hand..._pcodeid=71013

Or 2 of these in parallel-
http://www.partsexpress.com/pe/pshow...tnumber=016-25

The latter would be the best option

[LightningGSX]

As I look at the VFAQ on this, I can't imagine that a 1 meg resistor would actually work.I would just unplug the sensor, not hook up any resistors and see what happens.It should pop a CEL, but since the DSMs' emission diagnostics is nearly worthless(especially on 95s), there's a good chance it won't turn on the CEL anyway.