I have the electric power steering on my 2014 Roadster from MMC before they fell out with the supplier & copied it. It works just fine.
The UK agent who was very helpful when I had a problem that was related to MMC's wiring is:-
Mr Mike Waters
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Address
EZ Power Steering UK
The Moorings. 33 Teignmouth Road, Teignmouth, Devon.
TQ14 8UR
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E-mail �ezpowersteeringuk@aol.com
Telephone �Mike Waters . (0044) - 01626862804
Mobile �07967 439596
I like it but Cooperman who has the later MMC copy system has an on / off switch. It really helps at low speeds.