i have a 98 ex and i was wandering what i could use to to trick the o2 sensors to think i have a conveter. i heard of anti foulers for spark plugs but any other options. and what exactly is an o2 sim can they be homeade.

 

do a google search for "o2 sim" and you should get a site that tells you how to make one for like $10. I decided it wasnt worth the work and bought one from casper electronics for my race header. it works perfect but its costs $65