Good post Speedracer!

I was thinking it but was too lazy to type it! I have seen individual servos be affected by ignition noise in the past. In some cases just moving your hand around the plane while it was running would make the interference come and go.

And before I get the lecture from someone, yes I know 2.4 GHz. isn't supposed to get interference and I agree it won't from the antenna port. But ignition noise can sure get into the decoder and other slow speed electronics through the back door ..... servo and battery ports. I would suspect even some servos would be affected directly. If it were mine, I'd still replace the ignition even if it didn't produce interference. The engine will run better and total $ spent will probably be less than what the value of the time and $$ spent will be jacking around with a substandard ignition.