Hey guys last week I put a perrin test pipe on my evo 8 mr, using the anti fouler o2 sensor fix. It threw a CEL a few days ago and I reset the ecu. it went away. BUT today it came back, I drove it for a few minutes and it went away.

Is this normal?
I have seen CEL's before on many other cars '93-'01 Nissan, acura, honda...
but you always have to reset the ecu to make the cel disappear.

Will the CEL disappear normally or is something really flippin out?

thanks in advance...

 

what testpipe r u running

 

perrin

 

You went the cheap fix for 5 bucks and now your having trouble , just get the perrin 02 simulator i have had it on my 05 with zero problems for the past year its exoensive like 50.00 but i think its worth it

 

I am planning on it, but I was just wondering if the CEL will fix itself (turn off) while driving, without resetting the ecu.

I am for sure getting one I just got the pipe off ebay without anything else the day before my local auto-x event so... quick fix indeed. but not for long.

 

i was about to do the 5 dollar fix but i have an ultimate racing pipe and all u have to do is extend the sensor to the testpipe and thats it. if i was u i would get the 60 dollar perrin cel fix

 

Its not going to turn off , but on the plus side it isnt affecting your performance any like it would on your integra gsr which goes into limp d ick mode when the CEL comes on

 

Well I did notice that the power was still there, BUT THE CEL DID TURN OFF. it tripped me out I saw out of the corner of my eye it turned off while I was driving about 35-40 in town. so it DID turn off... Any takers??? strange huh?

 

mine does that all the time. One minute it will be on, the next it'll be off. I have an ams tbe with no cat

 

Buy a Creader like I just did. Resets any CELs in seconds and you can diagnose your own problems.

 

Buy the Perrin CEL fix. It wires to the 2nd o2 and you will have no more problems......

 

Mine does this, if I run the car hard it turns off the CEL, and it's because my o2 sensor is bad

 

Seal the hole in the anti fouler. Just take it to an exhaust shop and get them to spot welt it.

 

So you have no idea what the CEL code is right?

 

Well I know its because of the test pipe. but I was just wondering if it was normal to go back off while driving

Thanks alot guys, you all rock!!!