This is the standard Missing tooth trigger system, works for most engines and determines the missing gap threshold based solely on the previous tooth duration.
Note: For high-compression engines, it might be worth trying our Missingtooth, High Compression trigger system which averages the tooth before and the tooth after the gap, making the threshold far more resilient to the speed variations typical of high-compression engines with weak starters.
Most common trigger system today, can be used with or without HOME/CAM input to get sequential injection/ignition.
(In the GM LS world, this is refereed to as a "58x")
Supports
•2-180 teeth.
•1-4 missing.
See also, Trigger problems and solutions.
Note: By default, any tooth that is longer than 50% of the previous, is considered a "missing tooth".
Image from the built-in Trigger logger showing a perfect 60-2 missing tooth trigger signal
