I have 2.5" straight through and a test pipe it's loud as hell. I never get pulled over. I suppose it's where you drive. That and if your car isn't one of those "known" type cars they will probably think there's something wrong and just leave you alone. That or just give you a warning or a "fix it" ticket.
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Part of:
Wangan Midnight Maximum Tune 2 sedan expert.
APXRO: JZX100 Chaser "Odaiba Romance" 815HP/DG B1 2 overhauls. secret weapon
PM!: UCF10 Celsior "Jealousy" 810HP/DG B3 0 overhauls. vs battle car