[RUSHNBOBO]

Optimize your ignition timing to the very edge of ping / no ping at every rpm and load situation, most older vehicles can run far more timing than they currently run. New computer controlled vehicles do all this automagically for every conceivable situation.

You can't do that, but get it right for the area you drive the most. Also run a adjustable vacuum canister and dial it in after the mechanical is set up right. Mileage ,power, and cooler running engine are just some of the benefits.