Fitech EFI Rpm Noise Solved

My personal opinion is,
The RF interference issue is unique to every install. It really depends upon what devices are generating noise and where they are in relation to the signal wires. With each aftermarket kit being a custom install, the manufacturer can’t protect for every issue. With that said, and living through diagnosing and resolving a RF issue, I agree the FI suppliers could do a better job of providing ideas for resolution when a RF issue does occur