If you have a BMW run race fuel. There are 76 stations around the bay area that sell 100 octane fuel. It makes a huge difference on both stock and modified BMWs. Best price so far is 5.39 a gallon. Although it is expensive it is fun though. At least try one tankful in your BMW. I have no idea what other cars measure and push timing of the camshaft to take advantage of higher octane. I sure like the fact BMWs do. The 76 station I go to is in Redwood City on Woodside Road
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If you have a BMW run race fuel. There are 76 stations around the bay area that sell 100 octane fuel. It makes a huge difference on both stock and modified BMWs. Best price so far is 5.39 a gallon. Although it is expensive it is fun though. At least try one tankful in your BMW. I have no idea what other cars measure and push timing of the camshaft to take advantage of higher octane. I sure like the fact BMWs do. The 76 station I go to is in Redwood City on Woodside Road