Pros & Cons of cat gutting.....

[PKRWUD]

Originally posted by Unit 5302
Yes, a well tuned car can pass emissions in most cases with no cats because a car in excellent tune will not have a lot of unburned fuel going out the exhaust. I've seen it done before several times. My dad had a 1978 Lincoln Town Car with the 460. The cats were all hollow and every piece of emissions equipment on the car had been disabled. It passed after a run up. Keep in mind, it got 8-10mpg in town and 13-15 on the highway. It burned a LOT of fuel. That being said, a 5.0HO with it's aggressive camshaft really needs to be running great to do it.

Also keep in mind that the numbers allowed for passing are alot greater for a 1978 vehicle than they are for a 1986 or newer vehicle.

Take care,
-Chris