Quote:
Originally Posted by Timco
What would that higher octane do to a turbo engine like the ford ego boost?
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Nothing, but if you turn up the boost to the point where the engine detonates then going to higher octane would allow you to do it.
There is zero benefit to running higher octane than what your engine can handle without detonating. If you advance your timing, raise the compression or add more boost you may need higher octane.
There are some studies that say higher octane fuel (octane rating is just the fuel's ability to withstand combustion) will actually hurt performance and others that say it makes no difference as it will have the same amount of energy once fired by the spark plug.