Direct Fit CARB catalytic converter 1988 911 3.2

Leibenson · 10-19-2022, 08:36 PM

1988 911 3.2. 170k miles…original cat is bad. Any suggestions for a well made direct fit cat that is certified for…California?

bemmett · 10-24-2022, 02:14 PM

I installed this model in 2016 on my '87 (222K miles at the time) and it did an amazing job.

DEC Cats, CARB legal part # PO82605

Our host used to sell these, but I don't see it listed now. The website for DEC has this still listed as something they can build to order, FWIW.

darrin · 10-25-2022, 05:57 AM

big fan of M&K's active cat, they have a CARB version as well. definitely wakes up my targa's exhaust when I get "on" it. https://mkexhaust.com/active-exhaust-with-carb-catalytic-converter/ (but looks like it's not currently available)

3literpwr · 10-25-2022, 07:50 AM

Quote:

Originally Posted by darrin

big fan of M&K's active cat, they have a CARB version as well. definitely wakes up my targa's exhaust when I get "on" it. https://mkexhaust.com/active-exhaust-with-carb-catalytic-converter/ (but looks like it's not currently available)

NOT CARB compliant for sure.

Flynt · 10-25-2022, 09:13 AM

Quote:

Originally Posted by bemmett

I installed this model in 2016 on my '87 (222K miles at the time) and it did an amazing job.

DEC Cats, CARB legal part # PO82605

Our host used to sell these, but I don't see it listed now. The website for DEC has this still listed as something they can build to order, FWIW.

I used the same - only one I could find! I got that one for ~$350 (wholesale) from my supplier, back in 2020. They list it at $1135 today. Rock auto says it's $1376. Guess I should have bought them all. If you hustle, you may be able to find a vendor with one in stock at the old price. Or maybe somebody here will lend you a good one.

I may still have a good, used one, actually. Slightly rattly but will get you through a smog check.

darrin · 10-25-2022, 09:22 AM

Quote:

Originally Posted by 3literpwr

NOT CARB compliant for sure.

Curoious about what leads you to that conclusion (especially since link specifies the cat IS carb-compliant? I also believe several forum members had these on CA-smogged cars. The bypass valve is downstream of the cat. Although not in CA, my NON-carb active cat has passed CO smog several times w/o issue