Exhaust defouler

[FerioEX]

Hey fellas Im buying DC 4-2-1 header does anybody know any places that sell exhaust defoulers in CO springs?

[Conrad]

all you have to do is get 2 18mm spark plug defoulers screw them together bore one out just a bit... its like 2 dollars for them at autozone.

[FerioEX]

thanks brew!

[dsm king]

what the hell is a defouler?

[Conrad]

what the hell is a defouler?

when you run catless, it fools the o2 sensors into not throwing a code....