A big “thank you” to a friend in Holland who recently discovered how much catalytic converters contribute – he mounted new cats on his QP3 and reduced CO emmisions from 6% to 0.09% (!!!).
The catalytic converters on my car, as with so many others, had at some point been removed by a previous owner, with a section of straight pipe welded in it’s place. Despite that, the car passed inspection both when imported and more recently at my latest MOT.

One of the problems with 6% CO emissions figures, is that on any drive longer than 15-20 minutes, the occupants are going to notice. Several owners have reported headaches as a result.
My Dutch friend was happy to say that not only were the headaches gone, but the wonderful sound of the exhaust remains unaltered with high-flow sports cats.
I found a 200cpi oval sport cat from Redback (Australia) and will install it soon.

