Catalytic Converters are a necessity in today's world because of the amount of cars and trucks on the road. I remember when I was a child we would be walking home from Cub Scouts and would come by a car idling on the curb and our and our eyes and throat would burn. Those days are over. Back in 1990 I was told by a State Employee that Colorado Springs was one violation day away from going to Denver's emission testing which to me would really be an imposition. So at Buds Muffler we like catalytic converters. We always check cats for free. Including scanning and pressure test. And just because a catalytic converter gives a fault code doesn't mean it needs replaced. We fix a lot of cats with fuel system cleaning removing carbon and other contaminants at a fraction of the cost of replacing them. We use a 3M product that actually fixes about 8 out of 10 Catalytic Converters. We also replace them with the best replacement for the car or truck. Todays vehicles sensors hold the cats to a higher standard. We guarantee our cats to keep the cat indicator light off.