Originally Posted by
RandyCSVT
I was planning on getting the spark plug non-foulers today, but I was unsure about how well they would work with non-catted test pipes.
well i cant speak for your results on your Caddy, on my Evo I have had this set up for 3 years and not _one_ single SES light for catalyst. I was skeptical of this fix before I tried it but it works as advertised