i did this fix when i bought the test pipe. the light came on after about 20 miles after installing the pipe. a day later i did the cel fix. i have gone in exess of 5k+ and the cel has not even flickered. important facts. you need a half inch bit, something like a mounted vice grip to hold the fouler. put some oil on the bit tip so you dont destroy it. and the fouler gets hot. very hot when cutting it. please dont forget to grab the 02 sensor socket. i did. it sucked.

 

... read the link i posted a few up...

it has a full walkthrough... for those that are life impared... pics included