Oct 01, 2011 · Free Online Library: Electroair ignition: affordable electronics: this system replaces one magneto and offers aggressive spark advance. The acid test will be deomonstrated real-world fuel savings and reduced maintenance.(AIRCRAFT UPGRADES, Product/service evaluation) by "The Aviation Consumer"; Aerospace and defense industries Aircraft engines Equipment and supplies Electronic ignition systems ... The magneto must be timed by first adjusting or checking the internal timing with the magneto off the engine. This is done by checking and adjusting the ignition points to open at the E-gap position. The chamfered tooth should line up (reference timing mark for the magneto) in the middle of the timing window.