On idle, without the FireStorm Booster, the voltage measured at the incoming power to the ignition coil was 13.98V and current drawn was 1.98A but after installing the FireStorm Booster, the output voltage was 13.25V and current drawn dropped to 1.85A so this means that the ignition coil is running cooler after installing the FireStorm Booster because both the voltage and current have dropped lower.

The voltage drop of 0.73V and current drop of 0.13A means that the ignition coil is running 0.095W cooler than before the installation of the FireStorm Booster.

Yes, even though the voltage and current drops a little as measured in my Kancil, yet the resulting spark is bigger because the voltage frequency is increased.

Please see this simple video that explains how the spark voltage can be increased just by increasing the frequency but without increasing the current to the ignition coil.

http://www.youtube.com/watch?v=VqB2oq6uk_4

This should clear up your doubts.

Your ECU will detect if the engine is losing power and kncoking/pinging and auto retard but if the engine does not knock/ping then the ECU will run as advanced as it is programmed.

The ECU will not override the ignition coil output.