Hey guys,
i installed the crawford high flow cats a while ago
recently the "serve engine soon" light is on, so i bought a o2 sensor simulator to cheat the computer, but it did not work on my car.

thats why i need someone who has the o2 sensor simulator on their cars and give me a hit.

thank you so much guys

btw, how many do you purchase and need?
the one i bought, i only need one.