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Old 12-13-2011, 02:32 PM   #23
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Join Date: Sep 2011
Location: New York
Posts: 9,474
My Ride: '04 330Ci
Document your facts

Because the head of Porsche engineering explained that all their cars are designed to run on regular gas with no problems as they are 'world cars' and will run in countries where premium is never available. That is why the term 'recommended' is always used.
BMW has stated the same sentiment in slightly different terms, and tunes their cars so that they adjust to 89 octane with no problems. That's what our knock sensors and ECM are for.

Originally Posted by trj View Post
I'd still check the fuel pump and the filter. Running on empty tank does take its toll on the fuel pump. I'm not really sure how the gas meter works on our cars, but I believe it should still be sensor and cable linked.
Make sure you put only premium gas, our cars dont like lower octane gas.
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