ricethis98

i recently just installed mac mid length headers on my 98 camaro LS1. I also put the "off road pipe" on there as well, i now have no cats. My check engine light is on, im assuming that it is cuz my cats are no longer there. The O2 sensors are there and running. What do I do to turn that light off??? O2 Simms??? Also, what is a knock sensor?


On another note, I changed my oil the other day, and there were two peices of metal on my magnetic oil plug. They appear to be part of a circle, the are small and flat. Has anyone had metal in their oil before???