My Crossfire Coupe reached 14,000 miles in April and I started to feel a bumpy tick over, infact quite jolty. I then noticed a rattle under the car, I took it to the garage immediately and they told me the catalytic converter had failed...At least it is still under warranty I thought. They fixed the problem and told me they had never heard this problem in this car and at such low mileage. Low and behold its August and yep, its failed again, this time though, they say its the other side... Has anyone else had this problem with there Crossfire ??