REVscene Automotive Forum - View Single Post - How-to: Your first Mission Street Legal

d1 · 07-06-2009, 01:15 AM

On their website http://www.missionracewaypark.com/mr...ridayrules.htm
rule #5 states that "All vehicles must be equipped with mufflers and a functional exhaust system. The maximum allowable noise limit is 90db" - how do they measure the db level and how strictly is it enforced? People have measured the stock exhaust db level on my car (s2000) and it's over 90db at wot but this was measured at a distance of about 0.5 metres. Also, does an exhaust with mufflers but without a cat count as a functional exhaust system?

07-06-2009, 01:15 AM	#20
d1 I Fwap Fwap Fwap to RS Join Date: Aug 2006 Location: Vancouver Posts: 1,599 Thanked 492 Times in 125 Posts Failed 104 Times in 21 Posts	On their website http://www.missionracewaypark.com/mr...ridayrules.htm rule #5 states that "All vehicles must be equipped with mufflers and a functional exhaust system. The maximum allowable noise limit is 90db" - how do they measure the db level and how strictly is it enforced? People have measured the stock exhaust db level on my car (s2000) and it's over 90db at wot but this was measured at a distance of about 0.5 metres. Also, does an exhaust with mufflers but without a cat count as a functional exhaust system?