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nikitopo · 07-04-2016, 04:20 AM

Factory optional sports exhausts and aftermarket exhausts with a JASMA certification now sound almost the same. There is not a lot of differentiation anymore, because noise levels have to be low. If you don't change an exhaust for the sound, why do you change it? For the bigger exhaust tips? If you want power, go for a header. If it is legal in your area ...

Noise levels in Japan for a car made before 2010 had to be under 98-100dB. Noise levels after 2010 have to be less than 82dB and have to meet ECC rules or EU regulations!

07-04-2016, 04:20 AM	#2278
nikitopo Senior Member Join Date: Mar 2014 Drives: '15 BRZ RA Location: Greece Posts: 3,787 Thanks: 2,416 Thanked 1,944 Times in 1,261 Posts Mentioned: 29 Post(s) Tagged: 0 Thread(s)	Factory optional sports exhausts and aftermarket exhausts with a JASMA certification now sound almost the same. There is not a lot of differentiation anymore, because noise levels have to be low. If you don't change an exhaust for the sound, why do you change it? For the bigger exhaust tips? If you want power, go for a header. If it is legal in your area ... Noise levels in Japan for a car made before 2010 had to be under 98-100dB. Noise levels after 2010 have to be less than 82dB and have to meet ECC rules or EU regulations! Last edited by nikitopo; 07-04-2016 at 04:36 AM.