Quote:
Originally Posted by amdmaxx
When does a car need recertification?
320hp engine is already certified in 335is. Other bits and pieces are from BMW parts bin.
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I may be incorrect, but certification is based on chassis. You can't just swap out parts between different chassis and not have to get recertified. The engine would still be an N55, but a simple change like changing the quality of the leather from boston to dakota or nappa would require recertification.
You may know more than I do on the process, but I believe it's rather stringent.