on my rb30det im running vband from turbo down with an external gate. 3 inch to cat and 3 inch through to muffler. i've been reading for months but never actually found anyone or been given clear indication of them beating the dba with aftermarket exhausts. Loacted in Nsw
can someone please shed some light with me .
car : 1993 gts with rb30det
exhaust. JJR catcback system , catco 3 way cat (justjap) . custom 3 inch front piping
i cant make sense with comlaw and adrs which state . what category my car falls under , eg. maximum db for my car is **Db to be tested at idle and up to 4800 rpm and back down while remaining under limit