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In another thread
http://www.honda-pilot.org/forums/showthread.php?s=&threadid=4893&perpage=15&pagenumber=3
It was observed that "Octane has no effect on Horsepower". This is true - all things being equal.
But, if engine timing is adjusted to take advantage of the higher octane, then more horsepower can be produced.
Now, a higher octane fuel, such as premium, can allow an engine to run with the spark advanced more and still not ping. In the old days, this was done by actually changing the rotational position of the distributor. After you did that, you had to buy premium or the engine would ping on hard accelleration.
But, these days, the engine computer controls the timing. So, at long last I come to my question.
If I fill the tank with premium, will the engine computer detect via its sensors that the engine is running differently and advance the timing? If not, then why do they recommend premium for towing? Is that to prevent pinging that might be caused by the increased load and heat?
http://www.honda-pilot.org/forums/showthread.php?s=&threadid=4893&perpage=15&pagenumber=3
It was observed that "Octane has no effect on Horsepower". This is true - all things being equal.
But, if engine timing is adjusted to take advantage of the higher octane, then more horsepower can be produced.
Now, a higher octane fuel, such as premium, can allow an engine to run with the spark advanced more and still not ping. In the old days, this was done by actually changing the rotational position of the distributor. After you did that, you had to buy premium or the engine would ping on hard accelleration.
But, these days, the engine computer controls the timing. So, at long last I come to my question.
If I fill the tank with premium, will the engine computer detect via its sensors that the engine is running differently and advance the timing? If not, then why do they recommend premium for towing? Is that to prevent pinging that might be caused by the increased load and heat?