We used Magnaflow In 3", Out 2x2.5"
Our system is very quiet < 95dB
Check my exhaust construction : http://www.nsxprime.com/forum/showthread.php/141608-NSX-Turbo-600whp-red-milano/page2
Our system is very quiet < 95dB
Check my exhaust construction : http://www.nsxprime.com/forum/showthread.php/141608-NSX-Turbo-600whp-red-milano/page2