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Phil-T4 · 24th September 2020, 06:50

The 2 types of coils have different charge time rates therefore the ecu firmware must match the type of coil fitted, the ZCS code for pencil coils is used to make sure the ecu has the correct firmware downloaded to it.

24th September 2020, 06:50	#5
Phil-T4 I really should get out more....... MG ZT-T, Rover 75 Tourer Join Date: Mar 2011 Location: Olney Posts: 2,969 Thanks: 245 Thanked 1,088 Times in 657 Posts	The 2 types of coils have different charge time rates therefore the ecu firmware must match the type of coil fitted, the ZCS code for pencil coils is used to make sure the ecu has the correct firmware downloaded to it.