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what are the benefits of this flywheel? also, any downsides? my car is na-t. 330whp
Benefits is that your revs will be quicker which is why people who autocross prefer lightweight flywheels since revs are kept high for extended periods of time. You can also gain very little horsepower on a lightened flywheel. Downsides is that when daily driving, it will be easier to stall your engine in stop and go traffic since there is less rotating mass to keep the revs up and when shifting your revs will fall faster between shifts.