The NS400 shouldn't have much noise. I'd take it apart and clean it like ztune suggested. I'm on the HC800+ and my brakes squeal when I half apply the brakes and they're not up to temp, which is normal for performance pads. Yours shouldn't have the same issue.
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35% Hooper Optik | Takeda Attack CAI | F.I. HFC | Hotchkis Sway Bar | Stillen 24row | OS Giken Super Lock LSD | TK Shift Knob | EVO-R Carbon Diffuser
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