Quote:
Originally Posted by KR-Texas
Is there any rule of thumb for how much timing needs to be taken out to get rid of pinging? Or, does it depend on the exact configuration of your vehicle?
Also, I noticed the lower end RPMs only move in increments of -2, while the higher ends let you adjust by -1.
FX4-Texas
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My rule of thumb is to apply the SMALLEST change you can, and then see what that does for you. I don't think there is any "set" rule.
In your case, I'd look at where pinging occurs (in terms of RPM) and I'd reduce the advance at that point by the smallest possible increment there and then test.
You don't want to over-retard the spark - doing that will kill your power, gas mileage, driving fun, etc.
- Jack