Lots of different facts, dont know whats what. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Ithical · 05-10-2011, 07:51 PM

What is the California law on exhaust noise, what decible levels? Law Pre 2005/03 stated it can be up to 90-95DB. Post 2003/05 It is illegal to have a modified exhaust period, but cops are lenient on the law, granted the exhaust isn't overly loud and depending on the officers mood, etc. Some cities enforce that law to the T, others do not, just depends.
Also you get the DBs tested at the ref station, although DBs don't really matter anymore depending on the infraction given by the cop on the ticket.

05-10-2011, 07:51 PM	#18
Ithical Zilvia Junkie Join Date: Jun 2008 Location: North SD Age: 36 Posts: 457 Trader Rating: (15) Feedback Score: 15 reviews	What is the California law on exhaust noise, what decible levels? Law Pre 2005/03 stated it can be up to 90-95DB. Post 2003/05 It is illegal to have a modified exhaust period, but cops are lenient on the law, granted the exhaust isn't overly loud and depending on the officers mood, etc. Some cities enforce that law to the T, others do not, just depends. Also you get the DBs tested at the ref station, although DBs don't really matter anymore depending on the infraction given by the cop on the ticket.