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1997 993 Readiness codes/SAI

Engine

Vehicle Information: Model: 993; Year: 1997; Body Type: Coupe; Total Mileage: 83942;

I had my 993 in for service last week (12 mo low mileage, brake flush, AC service) and mentioned I was due a smog check. Long story short...readiness codes need to be set with an estimate of $220. I've read and studied the previous posts on the procedure for setting the codes. Correct me if I am wrong but attempting this without a reader is " a shot in the dark" and probably a waste of time. Practically speaking, can this be done with an aftermarket OBD II reader or do you need the Porsche factory reader/diagnostic gadget. I've done a little research and there are some inexpensive OBD II readers that claim to be able to set readiness codes. It seems like being able to read and reset codes could be handy. My service rep said that the codes can become "unset" if the battery is disconected. B.T.W. went through the SAI "thing" two years ago...for me the clogged ports were the result of some very worn guides (lots of valve noise and excessive oil consumption.) Had a top end rebuild done and found a machine shop that was having good luck with non-factory guides that were more durable. So far, so good, sounds very nice with minimal oil consumption. But only time will tell.Thx

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