Join Date: Mar 2010
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There are two sides to the harmonic damper issue. Taken from Unabomber's Manifesto, Pulley FAQ:
"Isn't replacing the stock harmonic damper (pulley) bad? Subarus do not come with a harmonic damper or balancer like some other vehicles do. For other manufacturers' vehicles, this is a legitimate concern. Proof:
'Thank you for your patience as I checked with our Technical Services Department regarding your message below. They advised that the crank pulley is a pulley and nothing else. It is not used as a harmonic damper/balancer.
Thanks for the opportunity to be of assistance. If you need any future assistance, please feel free to contact us again.'
John J. Mergen
Customer Service Department
Subaru of America, Inc."
I think you're right about the high rpms thing though - sometimes the lightweight crank pulleys create a "false redline."
Bottom line: install it at your own risk. If there are any negative issues, revert back to stock. Most people don't experience any serious negative issues; most are slightly positive.
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