Cats on TTI exhaust system

I watched a documentary on the environmental effects of emissions on shellfish. Also would like to warm it up without stinking up my driveway.
Look, nothing personal, but there are documentaries on all kinds of things; the pyramids were built by aliens, the world trade centers were brought down by Bush, the glaciers are all going to melt and we'll all be underwater. If you want to put cats on your car to make your it cleaner, then good for you. I applaud that. But don't do it because of a documentary on shellfish. I have watched a lot of shady documentaries. My favorites are the ones that say we'll all be dead in 10 years due to climate change. In the last 30 years, those warning deadlines have come and gone several times. Each time there was a TV show about it showing all the non-arguable data. Modern high performance cars have to work around the Cats with other performance items.