Does anyone use lambda spacer on the rear of cat?

i have used them a few times
sometimes they work sometimes not
i find the draft designs the best to use.
 
ive put non foulers to mine 500 miles and no light
 
VR6GORDY, Cheers for the reply, Did you use two a friend in work said to use two? Cant it be coded out the light? My friend said was to trick the ecu. I want to get all the angles of the job in hand before i tempt in to doing it. Cheers Bud....
i did use 2 .. had to cut the threads of one and weld it to the other i do have 2 spair if you wanna buy of me and make your own up