HI flow Catalytic converters
For the Giulia Quadrfolgio, there are several options for these cats. I've been looking at Eurocompulsion and Fabspeed. I'm open to other options if anyone has feedback. These items seem to be a very good, if expensive, option. Are they, in fact, worth the $3500-4700 that they sell for? And can anyone comment as to whether these are California-compliant for carburetion smog purposes?
1991 Mazda RX-7 convertible de-catted angry beehive.
2002 Mercedes C230 Kompressor.
2006 Mercedes CLS55 AMG.
2008 Subaru STI aka "The Flying Brick".
2012 Nissan GTR Black Edition.
2017 Alfa Romeo Giulia Quadrifoglio.