Hi, I've bought a second hand MVVS 45 IRS MG engine. Engine is supplied with a very strange version on Ignition unit! Ignition unit is the ICU-P (professional) Version 2 but it is supplied with plug cup suitable for M14 Brisk spark ! (in my engine is installed a Brisk U17 with M14 thread).

I have tested the engine on the bench and seems to be regular.
Question is: is my ICU-P with big spark plug cup a customized version ? Because all ICU-P ignition that I’ve seen on the web are supplied with spark plug for NGK M10 plug.
Very strange for me!

Any advise ?

Thank you in advance, regards.

Riccardo (Florence, Italy)