no sync loss at idle but on rpm

[sheek]

right now im using the stock igniter and coil for the car.

this evening after work i'll convert the car to coil on plug using the toyota coils which will eleminate coil, coil wires and igniter from the equation and come back with the results

[grom_e30]

i seem to remember my car would advance timing with rpm when i was using the wrong edge setting. so may be an idea to check both rising and falling for 'ignition input capture edge' as well as taking some tooth logs while you are testing

[sheek]

ok switched to wasted cop. so problem was a dodgy igniter/coil.