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Could this be Euro octane spec?
If so 95 EU = 91 US and 98 EU = 93 US
It would not make sence to have M5 running other preferred fuel from the rest of BMW lineup[/QUOTE]
Yes, I keep forgetting the Euro spec is different. Thanks for pointing that out. I did not think it made sense if those numbers were for the US.
I guess the new turbo's are more efficient, and the intercoolers will reduce the heat further, so 21 lbs. now becomes possible. I wonder why the horsepower and torque numbers are not much larger than the current M engine with these changes? I did not see the weight of the new M5 but it is surely going to feel good with this engine in there.
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