M3KILR

Solutions to CEL when running no cats...what is the consensus?..split DP's FWIW

dscottjr

the only known solution is having a chip with the cat efficiency code turned off a la APR stg2+

PSmalls::DoggieStyle

I thought someone had made a circuit to eliminate the code(s).

M3KILR

i remember someone who "stacked" his O2's or something like that

dscottjr

I thought Diego theoretically designed a circuit but never did anything about it.

PSmalls::DoggieStyle

I thought a few people did. Hmmm, could be wrong.

ZephyrS4

<ul><li><a href="https://www.audiworld.com/tech/eng53.shtml">O2 sensor from the Tech Section</a></li></ul>

dscottjr

Wow, that's new and looks like it might be the fix, eh?

808Guy

I'm still going to try anyway. Another trick I learned from the Honda crowd is to take the sensor out and wrap it in alot of tin foil and put it back in. Not sure why it works, but it fools the ECU into thinking there's a change from the primary to secondary.