l cut the convertors off of every vehicle I have ever owned....The stupid things just burn excess fuel vapor until the engine warms up....then it does absolutely nothing. HUGE restriction in the exhaust system.
I even passed a local E-check with my 94 Jeep Cherokee without it....The kid using the mirror was brain dead the day I went through and only half ass looked to see if the exhaust was intact. They ran it on the rollers and it passed the tailpipe test very well within limits.
For the power loss and loss of fuel mileage the convertors waste more fuel and create more bad air than they ever did to clean up the environment.....They also create huge amounts of heat.....Global warming? Anyone?....
I think most of the exhaust system emission controls are to appease the idiots at the C.A.R.B. They dont care about anything except whats in front of them that very second....They do nothing to look at impact in the future....The cost and efforts to produce the items hung on or attached to cars wasted more energy and made more environmental complications than if they just never put it on a vehicle in the first damn place....Look at air pumps.....All they do is pump fresh air into the exhaust system to do two things....one if there is a convertor it adds more oxygen to be burned by the convertor to create more heat and fully "Catalize" the fuel....Thereby dirty-ing more air in the process.
Two, in my motorcycles air pump system that I removed all the pump did was dilute the exhaust by adding fresh air to "fool" testing facilities into thinking that the engine emitted less emissions overall....WHAT A CROCK OF CRAP....Just think of the fuel wasted by all these vehicle running around hauling the extra weight of the bullcrap mandated by overeducated idiots that cant see beyond their own nose.
I would yank that whole entire exhaust system off your car carefully and archive it as a original "surviver" junk souvenier in the corner of the garage and I would promptly go out and buy a mandrel bent stainless steel system specifically for your car with true duals and spin-tec or pro-flo or Xcelerator mufflers in Stainless....You will never look back. and it will probrably outlast the car. Your pocketbook will eventually thank you for the extra power, better, mileage, cooler running vehicle.