Spark Advance

[imported_dantm4]

In my effort to learn more about cars, and my Reatta in particular, I was curious what the optimum spark advance might be at say idle, 35mph and 70mph? Any one care to elaborate?

-Dan
90' Black/Tan Coupe

[padgett]

Spark advance is not adjustable (except by reprogramming). Is a map based on a number of varibles combined called LV8 vs RPM with a base offset and another for coolant temperature. The reference is to the crank sensor which has a fixed position.

It is called a DIS or Distributerless Ignition Systen and is completely under computer control.

[imported_dantm4]

Would it change based on other variables? Possibly the spark plug gap?

-Dan

[padgett]

If it did, it would be too little to notice.