This R-33GTR was failed for W.O.F........................Because it's too noisy.............over 105db!!!
We changed this exhaust system about 5 years ago(Fujitubo Regalis-R)..........Time to change?? New law just came up anyway???
Any solution???.....................I was looking at many catalogues..............Un...HKS Silent Power?? Let's try this one!!!..............but how loud ????
Anyway we call up to ( Vehicle Certification LTD) for check db level......................How do they check???
Hold on at 75%of peak power...............So..... in this case(RB26DETT) 5100rpm!! And outside etc.....
Checking noise like this pressures!!
HKS Silent Power 94db!! with 33GTR!!
Result 94.4db...............so it's pass!!!............................We'll check power next!!!
