07-13-2018, 02:51 PM
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#33
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pessimistic skeptic
Join Date: Apr 2016
Drives: '14 FR-S Monogram AT JRSC
Location: Upstate NY
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There are increased vibrations caused by the light crank pulleys that can lead to spun bearings. I wouldn't take that risk for such a small gain (if any). Installing a performance exhaust header, removing the spare tire, or using lighter rims (and/or others) can make much more difference.
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