I was reading up on some of these ideas... anti-foulers and simulators
This was in the HowTo forums:
https://www.evolutionm.net/forums/sh...threadid=56631

In one of the posts someone talks about cutting the wires!?!

I thought that this was bad because the ECU needs some sort of electrical signal from the rear O2 sensor.

Will this work or am I just reading this wrong.

Any clarification on what they are doing with pulling the wires would be helpful also.

 

what kinda test pipe do u have?

 

https://www.evolutionm.net/forums/sh...d.php?t=114931

 

Vishnu test pipe

 

I am trying the anti-foulers tommorrow... i was just trying to keep my options open if these do not work

 

I use the anti-foulers, they work great.

 

www.gruppe-s.com sells the helix mechanical o2 fix. they work wonders. some people get problems with using anti-foulers, some dont. i just opted with the helix because it just doesnt caust any problems and its direct bolt on, so theres no crap u have to mess with.

 

What kind of test pipe/cat-back are you running... i havent examined the o2 bung closely enough to see if i can get 2 anti-foulers in there, ill know after work tommorrow

 

Tried the anti fouler trick but didnt work for me. I ended up with the gruppe-s fix. For some reason you can only buy it online. Its under the wrx parts and costs 15 dollars. Have had it on for a couple thousand miles and no problems.

 

I have a Works resonated test pipe. I used the O2 bung in my AMS cat-back for the anti-foulers/O2 sensor.

 

Anti-foulers for me and they work like a charm. I don't recommend cutting wires for nothing, SES light will definitely come on when it is dealing with emissions.