Cats on 97 boxster

[drewbz818]

Can the cats be deleted? I see pp has delete pipes, but for slightly newer models, would like any info or suggestions.

[harryrcb]

Yes they can, the question is is it worth it and why do you want to do it. If you want better performance and or sound then replace the headers and intermediate pipes.

[drewbz818]

I thought cats were jus something needed for states with emissions testing and were restrictive and cars run better with out them, what would be the reason to keep them?

[Wayne at Pelican Parts]

If you remove the cats, the fuel injection system will know and will trigger a check engine lamp, which means your car will not pass any emissions testing. It will also be difficult to resell later on. The catalytic converter doesn't restrict the system that much to make it worth removing them, in my opinion.

-Wayne

[mdrips]

During the historic moment now referred to as "Mike went to a Porsche dealer even though he owns Wayne's book", they detected a rattle inside of the catalytic converter. They stated they never open up or work on a catalytic converter, they just replace them.
Their advice was "let it fail, the replacement part is $1300, not including the labor to bolt it onto the engine".
So, if you take it off, keep in mind it's an expensive part to replace if that day should ever arrive. Here in California, there's no option to remove one as cars are regularly required to pass an emissions test.

[s_wilwerding]

I had my car re-programmed to run without cats when I did the engine conversion. As Wayne says, you can't just take them out.