Quote Originally Posted by Exact-Oh
Yep, the converter(s) are immediately after the O2 sensor(s). An easier way to check for a plugged cat is to drill a hole before the cat, and install a pressure gauge or remove the O2 sensor and install gauge. You should not get more than 15-20 psi of pressure there. If it's more, you have a clog somewhere downstream... could be muffler though... I have seen that happen before too.

Well damn, that wasnt is , now It sounds like i have a boeing jet in my front yard. I think i will just start a new thread regarding the lack of power.