oxhouser

They are made for old style hemi heads on yank motors, with some states of tune the excess fuel used to keep fouling the spark plugs, installing the anti fouler it removed the spark plug tip out of the combustion chamber and stopped it fouling. its just lucky that the 02 sensors use the same thread as spark plugs.
if you have access to a machine shop its a tube around 1" long with the same male thread as you have on the o2 sensor on one end to screw into the decat pipe and a femail one on the other end to screw the sensor into

oxhouser

link to some pictures and how to install
http://forums.evolutionm.net/evo-how-reque...fouler-how.html

azzurri

good man will prop go down this road ....thanks

Pie_n_Chips

Or you could install a casper o2 simulator (needed on DBW cars)

SGS2000

Hi, ive just put a deact pipe and stainless centre and rear boxes. I have put the anti foulers in but after about 100 miles my CEL has come on i will get it checked but im guessing it will be the O2 sensor, has anybody got any solutions? Thanks

m1bjr

You need that sensor about 3" out of the gas flow. Is it long enough?

Pie_n_Chips

Try reading the post directly above yours

s2konroids

Just buy a berks, or t1r