I've heard the air dry method is the best to reduce risk of fine scratches but when it comes down to it you cannot eliminate the risk of getting fine scratches in the paint. That is why they make polishes and waxes for.
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Airaid CAI | Borla S-Type Catback | Amsoil 10w30 and MTG Trans. Fluid
382hp 387ft/lb | 1/4: 12.9 @ 112mph