Miata Turbo Forum - Boost cars, acquire cats.
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Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   General Miata Chat (https://www.miataturbo.net/general-miata-chat-9/)
-   -   Down on power, diagnosis? (https://www.miataturbo.net/general-miata-chat-9/down-power-diagnosis-25820/)

pdexta 09-23-2008 04:08 PM
Originally Posted by patsmx5 (Post 311162)
I think all 99's had the pre cat. Mine did and it's not a cali car. It's called "the boat anchor". That huge cast iron manifold has a pre cat built into it. Double check, but I'm 99% sure all NB's have a pre cat.
Can anyone confirm that all '99's had a precat in the exhaust manifold? I was under the impression that was essentially the difference in a cali car and a 49 state car. I'm gonna be hella unhappy if I go to the trouble of pulling the manifold out for nothing.

patsmx5 09-23-2008 04:12 PM
Probably not worth much, but IIRC, cali cars have 3 O2 sensors and non cali cars had 2. I'll look up the pre cat shit real quick...


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