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New Jersey Exhaust & Muffler Laws (2026)

Info: Your vehicle needs a muffler in good working order.

InfoVerified Jul 30, 2026

Your vehicle needs a muffler in good working order. Cut-outs and bypasses (which route exhaust around the muffler) are prohibited, and excessive or unusual noise is barred. New Jersey sets no fixed decibel limit (N.J. Stat. § 39:3-70).

Official source: nj.gov →

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