Hi, I'm pretty new with these cars. I have a 91 tt JDM . stock went on dyno for little check-up but left catalytic converter blew-up and was getting out of the muffler. So my question is: can I simply tate off the two cats and put 2 straight pipes instead of them? And the main question is what are the 2 sensors getting in the catalytics?They are just after the cats so I dont think they are O2's... thanks