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      04-23-2011, 01:41 PM   #102
richard in NC
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Drives: 2009 Z4 35i
Join Date: Jul 2009
Location: Charlotte, NC

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In most cases the smoothness of a turbo 4 is related to its non-turbo base motor. If it is good, the turbo can be. I've owned may types of motors over the years. The last turbo 4's were in Dodge Daytona's in the 80s. They were very good for the time but got noisy and rough above 5000 RPMs. I now appreciate a motor that is smooth all the way to a 7000 or 8000 RPM redline. But the broad torque curve of a well tuned turbo is nice too.
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2020 X3M non-comp, Alpine White over black : Exec Pkg, ventilated M Sport seats, 20"s
2020 M2 Comp, Sunset Orange/Blk: Orange stitching, DCT, exec pkg, bicolor rims
Gone '18 M550i, '16 X4 M40i, '15 M5, '13 X3 35i, '12 335is, '11 X5 50i, '09 Z4 35i, '08 550i, 06 X3, 06 650i, '02 M5, '99 540i
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