[Christ]

Originally Posted by Duffman

I would be blown away to find any cars (other than maybe the early cat adopters ie 75-77) that can be "tuned" to pass emissions without a cat that they were designed to pass with.

The auto industry is ABSOLUTELY INFAMOUS in saving 50 cents here, two dollars there on components that were useful or had value to the public. They are not going to put on $100 on precious metals into a device that a % of the public has never seen or even know what it does if they can get away without it.

You're confusing their want to save a penny with the law, here. They put them on there because they don't have a choice, and their vehicles need to be able to cover a wide range of uses. For the individual, a vehicle can be tuned to cover the very limited range of duty that vehicle will see without having to have a catalytic converter to stay within emissions limits.

That doesn't mean it will pass visual testing, but I've already done tuning on vehicles to pass "sniffer" tests without cats on them. Ya know, you can pay emissions testing facilities to run your vehicle without inspection being done.