I found these, and they look really nice from the quality perspective. Anybody use these? Do they blow clean? HC -> 0 (or less than 15ppm) CO - > 0 (or less than .4% ) And without killing NOx at both 15 & 25 mph. Many thanks! Happy New Year!
Do you guys know if the Fabspeed 458 Italia High Flow Cats with HJC 200 Cell cats fit in the Speciale?
I heard they blow lower numbers than stock? Is this the "fun" part of ownership? Do you know if the difficult ca test had the HD HJS cats. These are rated to a higher Euro standard. I believe Euro 5 or 6 level of cleaning as opposed to Euro 4 for the pure race cats.
