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					Originally Posted by B.G  Awesome, thanks!   
No idea if it makes a difference, but will these work equally well in cold outdoor temperatures? I noticed you live in Australia, I live in Norway..   
And they won't require a much longer warmup will they? There might be times I need to drive it short distances. | 
	
 I live in Alpine regions of Australia where it is common to be -10 deg C.
The 10 and 11 heat range plugs work totally fine in those conditions, you just need a properly calibrated engine map that is set to work in all operating conditions.
With a proper CDI ignition system (leave inductive for the chumps of the world!) there is never any need to worry about the garbage of a warm up then race plug, that is plain idiotic.