Who would win?

[Boxtaboy]

Originally Posted by blinkwatt

00'+ Boxster were equipped with an additional set of cats that the 97-99's didn't have. So no,there aren't any cat bypass pipes like you want for the 2.5L engines.

Actually, the secondary cat bypass pipes that Fabspeed sells replaces the set of cats that are connected to the muffler (which the 97-99 models also has), so in theory, you could probably also install them, but then you wouldn't be running with ANY cats on the car anymore, and so that would be illegal. The 00+ models still have a set of precats that are connected to the headers, so you still technically have cats if you install the fabspeed bypass pipes on the 00+ models.