Originally Posted by lexus114
That's why I'm trying to figure out why it runs better on the 89 octane.
I'll repeat my last post:
Hot ambient temps increase spark knock.
So on a hot summer day many cars with knock sensors can benefit from higher than the minimum octane.
In hot weather the knock sensor causes timing to retard and reduce performance.
That's why I'm trying to figure out why it runs better on the 89 octane.
I'll repeat my last post:
Hot ambient temps increase spark knock.
So on a hot summer day many cars with knock sensors can benefit from higher than the minimum octane.
In hot weather the knock sensor causes timing to retard and reduce performance.