electronic timing

D See 2

Senior Member
i dont understand how it is possible to advance/retard timing through a chipped ecu... bottom line, if the cam is exactly set a 0 degrees, the spark plug will fire according to the position of the cam/crank, not the computer.
am i right on this? if not please explain...
 

pills_PMD

Super Moderator
ignition timing can be advanced or retarded through the computer. the cam timing, which is entirely different can only be changed through the cam gear
 

lsvtec

GNU/Linux Evangelist
On an ignition with a Distributor the rotor has a contact that is about 90 degrees long. The computer can choose to fire the spark as long as that contact is "touching" a point on the cap. So your computer decides, based on the info it is getting from its sensors, when to fire the spark.
 
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