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1999 Boxster Engine Swap Question.....

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Current motor is shot and was thinking of putting in a 01 Boxster S engine into it but wanted to know what issues may I run into doing this? If I recall correctly I should be using the 996.1 throttle body and 996.1 DME or update my existing DME. Also I have to add an additional wire but other than that I believe Ill be using my existing engine harness, gauge cluster, etc... Would I be able to use my existing 2.5L DME for a bit or does it have to be updated / replaced right away? If I do decide to drop in a 996.1 DME wouldn't I need the transponders, keys, etc as well? If I do opt to just update my DME which would make more sense who does this and about how much does it cost? Also curious would the car pass smog or is this something I would have to take to a smog ref? I live in California. Ive pondered on just putting in a 2.7L which I could just use my DME as is and just add another wire to the secondary air tube and be done with it.



Thanks in advance.

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