The risk of RFI should be eliminated by a range check. With correct setup, RFI is not a concern.
With a choke servo, the ignition circuit is physically isolated from the receiver component.
You can loosen up a spark plug or cable in flight and the RFI noise generated will overwhelm any FM system, and that's something you can't find out from a range check. Trust me, it happened to me.
Theoretically speaking PCM should be impervious to engine generated RFI noise thus masking the problem, but when the noise is too recurrent you should be able to note a loss of control resolution or poor control response. Now, it's my understanding that spread spectrum technology systems which operate in the 2.4gH frequency area will not detect RF noise which is situated around 60 Hertz, thus fully masking the noise source.