So, guys, now it’s happened, after I’ve only driven to 4 cylinders after the engine change, until we’ve come to the conclusion that the spark plug from the second cylinder is defective, my cat has gone fluted. What do you think of this:http://cgi.ebay.de/ws/eBayISAPI.dll?… You can do such funny things with a defective cat http://www.youtube.com/watch?v=ezWzABmnYoY