US /vs/ EU ignitor module, HELP PLEASE?

[Ivan141]

Have you run a diagnostics check on the ECU whilst the problem was occurring?
Just trying to cover the basics here. If it's an electrical gremlin, it might show up on the ECU. Have you pulled a spark-plug to see if the engine was flooded after multiple start-up attempts or rather the opposite?
Another thing worth fiddling with is the AFM, you can try restricting the inlet with your hands whilst cranking and see if it makes a difference in the sound of the engine. Have managed to start a reluctant car with a faulty AFM sensor once that way.

As always with starting problems you need to check the 3 basics, air, fuel and spark. Fuel is rarely a problem, can easily be checked as well (maybe not very safely, but what the hey). Spark is also relatively easy to check, air and mixture are a bit more fiddly. I get the feeling you're over-analyzing the ignition bit at the moment, which may blind you of other possible causes.