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Discussion and questions related to the course Practical Standalone Tuning
I want to tune my engine with motec m84
I want to now what is the trigger setup of LS3
what ref/sync mode ?
crank ref teeth ?
tooth ratio ?
crank index position ?
can you help me to find this information
I have a late model LS engine running on an M84 with the following:
Ref/Sync Mode = 7
Crank Ref Teeth = 60
Tooth Ratio = 50
Crank Index Position (CRIP) = 80.0
Ref Sensor Type = 1
Ref Sensor Edge Polarity = 0
Sync Sensor Type = 1
Sync Trigger Edge Polarity = 1
I'm thinking the CAM signal is not stock (since stock LS engines have 4 teeth of different sizes on the cam). For the stock CAM signal, I would try Mode 17 with the above settings.
Perhaps try mode 23 if your engine has the 28 tooth crank trigger.