Recurring CEL diagnosed

[BOOSTR]

I put my catless downpipe on w/o a MIL elimantor at 26,612 miles. Got my first check engine light at 41,914. Also discovered a broken flex hose at that time. Got that fixed and reset the PCM. The CEL came back twice over the next 382 miles. Thanks to AutoZone I now know its the "PO421-warm up catalyst below threshold" and not a bad O2 sensor.I spent $4.27 on the HELP #42002 spark plug non-fouler. That should take care of it, right?

[BOOSTR]

Just completed the fix. I will know after a long highway run tomorrow if its fixed for good. I liked the ease of this method vs hacking in to the wiring.

[BlkZoomZoom]

Should work.

[BOOSTR]

I have driven it for 398 miles since doing the double fouler trick. Thats the longest distance that I have gone since the CEL's started. So hopefully its fixed for a while. (yippy)