Originally posted by `92CXhatch
well i have seen two different types... i have seen ones that LOOK stock but still flow a bit more... and then i have seen the test pipe style that you are talking about...
and i am here to say that the one that you are talking about does NOT work and you should just get a test pipe... you will know it doesnt work if you have a car that runs two o2 sensors... you will start throwing a code as soon as you put it on the car...
-Keith
Unless someone makes 02 simulators for your car.