NEW EHAUST LAW...............!!

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!!!

SKYLINE GT...........(R)S??

R33GT-Rrrrr.............ST!!



Crank B**** time!


Stock internal ..still??


Today this Skyline GT....S came for tune.........I was very impressed with front badge!!
Anyway time for tune........................stock internal with 1.2mm head gasket, GT3o turbo Z32 Air flow power FC etc ......

This engine doesn't like boost (*_*)' high compression.................So 1.2bar max.......
330kw at wheel.................................exhaust housing is bit too big I think.....Try with .73 next time??