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This is just because I'm a little slow to comprehend. I gather from what your saying that I would be wasting my money putting Premium in my "92" 850i unless there is a chip in it. So I do have a Dinan chip in my car with a Remus exhaust system so YES or NO? Do I put Premium into it or can I take the next step down? Sorry to rehash old ground I'm new and from the sticks. ;-)
Jim