The turbine and compressor wheel are balanced as a unit. You would have to mark them. Even then I would look into having a turbo shop balance it. 170,000 RPM is as high as the compressor map goes for the 14B. If 2 oz's can make your car shake horridly at around 900 RPM (on the tires) imagine what being little off balance at 188 times that speed would do. :stick:
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