G2 Corsa Cat-back (rear exhaust) has sold many hundreds in CA and other States.

I dont know of ANY law-violations, but some neighborhood assn busy-bodies might complain. REV AS YOU GO BYE

There were TWO systems, 2.5″ and 3.0″ …… the latter is louder, but not unlawfully so.
Did you get a receipt / Part # for Corsa when you bought car?

Even at noise-sensitive Laguna Seca, most track rats can track with G 2 Corsa.

Seems like the post got cut off or something.

My understanding is that there was Assembly Bill 1824 that was passed and in effect on Jan 2019 as now updated California Vehicle Code 27150 – 27153 (2019). My main concern is that in lieu of a fix-it ticket, it is now a straight-up fine.

From what I understand, the way CHP tests it for compliance (95 dbA) is at idle. However, there doesn’t seem to be a standard testing method other than “steady-state conditions” based on SAE J1169_200707 & J1492_200810 (former being cancelled?)

JonB ~ PartsRack said:
There were TWO systems, 2.5" and 3.0" …… the latter is louder, but not unlawfully so.
Did you get a receipt / Part # for Corsa when you bought car?

@JonB, yep. 3″ CORSA, parts # 14122 & 14119. From the inside, she sounds amazing! Especially at deceleration. 😎