My question is: when one coil fires 2 cylinders then I need only one TC4424 8pin controller when there will be 2 IGBT transistor each for one coil right?
Yes, that is the right IGBT it is special designed for ignition coils.
If sourcing them is hard then why not use an OEM module like the 211 Bosch unit or similar.
In my experience the problem only usually occurs if you have a VR interface set to adaptive mode or if the VR interface is badly matched to the VR sensor.
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