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				Originally posted by Spazum888  
hmmm... my guess is .100 more liters.... just a wild guess 
			
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It's a 4.4 V8, so by their usual convention the car would be 644i, but the car is a 645i.  Maybe they want to spoof people into thinking the engine is bigger than it is?  
Btw, nice pic in your sig.
b