Quote:
Originally Posted by DennisAN
Driving a car with a misfire can wreck your expensive pre-cats. Boxster pre-cats are $1,700 EACH.
Normally P030x codes are misfires caused by ignition problems, and are detected by the crank angle sensor. In other cars I've had them from a dirty MAF sensor wire too. Do you have an oiled air cleaner element?
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Thanks for the note on potential damage to the pre-cats.
Everything with this engine is 100% stock. Genuine Porsche air cleaner that was changed 5000 miles ago by me.