Octane
03-04-2010, 01:37 PM
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Octane
What fuel map would the cobalt 2.4L use if I used 89 octane???
also would mileage be the same as 91? :S
also would mileage be the same as 91? :S
Last edited by afterlife04; 03-04-2010 at 01:37 PM. Reason: Automerged Doublepost
03-05-2010, 02:15 PM
#4
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It will always start out on the high octane map. The computer doesn't know whats in the tank 
As soon as there is knock detected, it will pull back timing and drop to the low map.
On 89, it is likely on the low map most of the time.....not likely going to break anything but why give up hp for the sake of what? Less than dollar a tank savings over 91?
As soon as there is knock detected, it will pull back timing and drop to the low map.
On 89, it is likely on the low map most of the time.....not likely going to break anything but why give up hp for the sake of what? Less than dollar a tank savings over 91?
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