I am thinking about buying a midpipe and I know some have gotten a cel. When I owned a civic I came across a little trick on one of the honda forums to keep the cel from coming on when using a high flow cat. You get two spark plug foulers and drill one of them out so the sensor end of the 02 passes through it. Next you screw the drilled fouler and sensor into the undrilled fouler and insert same into the midpipe....I never got a cel using this trick on my civic with high flow cat. Do you guys think this would work for those who have a cel due to the midpipe.

 

yes ive seen it done. watch for the return thow.

 

Ive tried it before.. it was a close fit and the cel came back on about 10 minutes later. ive heard that people can get them to work for them but it didnt for me.

 

"Spark plug fouler"...? Sounds like my old beetle :p