Dgc333
Well-Known Member
- First Name
- Dave
- Joined
- Aug 24, 2021
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- 21 Ranger Lariat
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- Engineer
While that is true you have to keep in mind a couple of things;If 87 octane is sufficient, yes it will add spark timing during part throttle steady state cruising as well as full throttle.
If 87 octane is not sufficient, spark timing will be removed by the knock sensors at both part throttle and full throttle.
1. At light throttle cruise the engine is least likely to have a spark knock issue where higher octane is going to make very little difference.
2. Adding timing is not a magic bullet to more power. Depending on the particular engine you have the engine will want to see max cylinder pressure around 20 degrees after top dead center. To make that happen you need to add timing. But if you add to much timing and and the max cylinder pressure occurs before that ideal spot you loose power. At WOT higher octane let's you have timing closer to the ideal point for max power.
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