See ya Joe
I will talk to steve again next week about it. I checked the NGK website earlier & it said the same thing about a car with an ecu needing the resistor type (4ohm btw macka).
Said something about issues with idle, etc, etc.
Funnily enough there seems to be a miss at idle, but I took the car out for a lap between showers & it does seem to go better with the new plugs.
Also noticed that the rev limiter on the mines ecu is set somewhere between 8500-8800rpm. Strange thing is I never noticed that before cos I was sure that it was cutting in at 8200 as per the stock ecu that I had:confused: