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thumper · 01-13-2019, 09:49 AM

This is how the state ref tests in Cali:

meter is set 19 inches away from exhaust @ 45 degree angle,
engine revs @ 4200rpm,
max allowable is 95 decibels.

The owner of this WRX is doing this to fight the $1000 ticket he got. With the Nameless muffler deletes which scored at around 90 decibels, the car technically has passed under Cali rules (it's still up to the judge to decide whether the owner deserves to have the ticket canceled), but it would have failed here at our much lower 84 decibel limit if the test were done the same way.

Just for reference, below are values for a stock Jaguar F Type-R (according to Edmunds):

Sound level @ idle (dB) 45.1
@ Full throttle (dB) 84.4
@ 70 mph cruise (dB) 67.3

01-13-2019, 09:49 AM	#1612
thumper Witness protection Join Date: Apr 2001 Location: GVRD Posts: 14,427 Thanked 5,343 Times in 2,222 Posts Failed 111 Times in 57 Posts Member's Picture Albums	This is how the state ref tests in Cali: meter is set 19 inches away from exhaust @ 45 degree angle, engine revs @ 4200rpm, max allowable is 95 decibels. YouTube (Short URL) The owner of this WRX is doing this to fight the $1000 ticket he got. With the Nameless muffler deletes which scored at around 90 decibels, the car technically has passed under Cali rules (it's still up to the judge to decide whether the owner deserves to have the ticket canceled), but it would have failed here at our much lower 84 decibel limit if the test were done the same way. Just for reference, below are values for a stock Jaguar F Type-R (according to Edmunds): Sound level @ idle (dB) 45.1 @ Full throttle (dB) 84.4 @ 70 mph cruise (dB) 67.3 __________________ "The guy in the CR-V meanwhile, he'll give you a haughty glare. He's responsibly trying to lessen his impact, but there you go lumbering past him with your loud V8, flouting the new reality. You may as well go do some donuts in a strawberry patch and slalom through a litter of kittens." Dan Frio, Automotive Editor, Edmunds Last edited by thumper; 01-13-2019 at 10:43 AM.