Originally Posted by dojj
So, if you want to ditch the cat I recommend you do a little investigation first. Just to be sure. This can apply to all cars, not just Sierra's but I'm thinking with Sierras in mind here.
I did this, I had a MK5 XR3i 130psi on a K plate - it was registered 30.9.92 but was built in either Jan/Feb 1992 according to the VIN number. So I removed the cat legally
