IS MY MOD LEGAL?

Exhaust Noise in Massachusetts

Vehicle type: Van

Conditional

Massachusetts limits vehicle exhaust noise to 95 decibels measured at 20 inches from the exhaust outlet. Modifications that increase noise beyond legal limits or use cutouts/bypasses are prohibited.

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Frequently Asked Questions

Are exhaust noise legal in Massachusetts?
Massachusetts limits vehicle exhaust noise to 95 decibels measured at 20 inches from the exhaust outlet. Modifications that increase noise beyond legal limits or use cutouts/bypasses are prohibited.
What are the exhaust noise limits in Massachusetts?
Massachusetts limits vehicle exhaust noise to 95 decibels measured at 20 inches from the exhaust outlet. Modifications that increase noise beyond legal limits or use cutouts/bypasses are prohibited. For specific numeric limits and thresholds, see our full compliance report.
Are there exceptions for exhaust noise in Massachusetts?
Yes, there may be exceptions and exemptions. Get the full details including medical exemptions and edge cases in our compliance report.

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