With the allowance of ECUs in the GCR, I was wondering if something like the Electromotive Tec-GT is legal for an 1.8L Miata in ITA. The GCR says you can only use a crankfire ignition system if the car was fitted with one from the factory. The Electromotive system uses its own crank sensor you install.

Does the 1.8L Miata have a crank sensor? Am I talking about the same things or am I confusing definitions?

My overall question, however: Would something like the Electromotive Tec-GT be legal on the 1.8L Miata?