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Old 11-02-2009, 09:56 AM   #72 (permalink)
j.arnaldo
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4-5 hp, or 3-5% gains? Please clarify. The literature that came with my K&N air filter used percentages to measure the gains. Allegedly, my '04.5 Touring Coupe gained 3%, which=8.61hp. Any experts in the house??
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