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My 83 has option code 027 which is "Version for California"..
I believe the CA cars have different Lamda control boxes (per PET)
911-617-103-00 shows 1981>>
911-617-103-01 1981>>> CAL
Also the engine has a different designation... 93016 is CA specific. If you look in PET by engine designation you will see some things like the WUR are specific to 93016 engines.
My assumption is the Lamda probe box is designed to probably keep the engine running a bit more "lean" at startup, etc than 49 state cars to compensate and burn more fuel/create a cleaner burn. Guessing the WUR is calibrated to do the same.
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