The article states: 'a licensed professional can only tamper with an emissions system.' This is obviously not true, because the person who stole my catalytic co

The article states: 'a licensed professional can only tamper with an emissions system.' This is obviously not true, because the person who stole my catalytic converter most likely did not have a license. Much like the hundreds of thousands of diesel based Mercedes Benz with a BB in the EGR valve to increase fuel economy, power, and smoothness. In Texas, I see a lot of trucks from the oil fields which are fitted to run on dirty diesel. Every once in a while, you see a natural gas truck, but it is rare. I was just looking into buying a natural gas dryer, water heater, and oven. I get the same feeling of buying a Nexus phone and choosing a carrier versus getting stuck in a contract. The initial lump sum will pay off in savings within a year. My only worries revolve around repairs.