That's because the sticker HP is at the flywheel and not at the wheels. A stock 370 has around 270-275 HP at the rear wheels and with the K&N, they are saying they're getting about 10 extra HP at the wheels.
You can never really go by what the sticker says. Best way to know is to get the car dynoed!!
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Stillen Gen3 CAI|Berk HFC and CBE|UpRev|15mm H&R front spacers|20mm Ichiba rear spacers|Stillen front and rear sway bars|Yokohama S. Drives|Swift springs|JDM Blinking Fog|8000k HIDs|9% window tinting, 47% on full windshield
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