[Marozl1LE]

Originally Posted by arpad_m

Well, I remember that the old ones were originally rated for 425 crank hp each, just as h018871 and Z OH 6 stated above, so it's somewhat surprising that they went bad at "only" 6xx rhwp that your car has.

Then again, I checked the cats at Kooks's website, and now they claim a rating of only 375 per cat (in red)... one wonders how accurate these "ratings" are if they simply reduced the spec seeing the failures

And I don't listen to him because in Germany, driving without cats or from another brand is like being a criminal person, and you can easily lose your car, a lot of money, and a little bit of ass bleeding.
But after one year, like now, I switched to GESI UHO cats. They're not allowed here either, but it's working on a lot of tuned cars with 1000hp here without any issues. Tell me the exhaust shop and the emissions test are not a problem.
Only the entry in the vehicle registration is such a thing...