Quote:
Originally posted by SPIKES
A QUESTION?
when you fill up again after you have run regular with premium .. how does the computer detect this and advance the system??
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Pretty simple. The computer advances ignition timing until it " hears " knock.
Then it retards the timing in small increments until knock is gone.
I.e., you cheap out on octane rating, you will end up with less timing advance & slightly less torque/hp/snap, balls, whatever you want to call it.
The difference would be hard to notice for some people.
