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jbauto jbauto is offline
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Join Date: Jun 2025
Posts: 3
Quote:
Originally Posted by garagejdm View Post
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.
My VECI decal says My 83 Cali car cannot be sold new outside of Cali. Right on the decal!! So, it's got an backfire valve, a lean decel Air valve, a Cat, 02, and ECU under the R. seat.
Old 12-18-2025, 04:04 PM
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