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If you plan on staying NA then 25% should be worth a 10-15RWHP gain... I have used the 25% underdrive pulleys on smaller engines with noticeable gains.
But the real benefit is the ATI damper itself. Thats the best insurance policy you can buy for your engine.
If you plan on staying NA then 25% should be worth a 10-15RWHP gain... I have used the 25% underdrive pulleys on smaller engines with noticeable gains.
But the real benefit is the ATI damper itself. Thats the best insurance policy you can buy for your engine.