i just bought my 91 ls a few weeks ago, it is my first car, the guy said that the car had a newer engine put into it and it was converted to obd1, what i wanna know is if hes telling the truth on the obd1 conversion, how can you tell if you have an obd1 conversion rather then the stock obd0? thanks for the help

 

you could always look at the ecu, I guess. see if theres a conversion harness.`

 

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