Anyone Had Their Gtr Decibel Level's Read ?

[Imtorqing]

What exhuasts are people running on their RB26's and do you know the decibel levels.

I have a 26/30 with a custom 3 1/2 inch exhaust with an Xforce Cannon and it is pretty loud. Looking at a HKS Silent Power exhaust but worried that it might cause a power limit.

My cars got Argo and wiseco forged internals so im chasing big hp with my 42R Turbo.......

[R31Nismoid]

You'll need two mufflers mate, not just one, that plays a fair part in it all.

Mine is 93dB, 3.5" and will flow without issue (two mufflers) similar in design to the GTR items around (also custom made)

So it can be done without much of an issue, its just two 'as big as ya get in there' mufflers and least amount of bends etc, so exclude offset mufflers and so on.

[stolen_s15]

As above, plenty of mufflers. You'll prob have to go custom.

[N1GTR]

What exhuasts are people running on their RB26's and do you know the decibel levels.

I have a 26/30 with a custom 3 1/2 inch exhaust with an Xforce Cannon and it is pretty loud. Looking at a HKS Silent Power exhaust but worried that it might cause a power limit.

My cars got Argo and wiseco forged internals so im chasing big hp with my 42R Turbo.......

Sh!t, mines almost exactly the same - i have nfi on the actual reading, lets just say "its not quiet"

[nizmonut]

lol 95, try 148. lol 3 inch dump into 4 inch straight pipe.

[N1GTR]

148? So do you drown out aircraft

[nizmonut]

148? So do you drown out aircraft

i havent tried yet, but the cop heard me coming from the other end of the manawatu gorge.<<<N.Z. about 15 kms away

.

[R31Nismoid]

oh yeah, this thread also

longer, more detail in it

http://www.skylinesaustralia.com/forums/Su...Kw-t217638.html

[N1GTR]

i havent tried yet, but the cop heard me coming from the other end of the manawatu gorge.<<<N.Z. about 15 kms away

.

Is that legal in NZ?

[nizmonut]

Is that legal in NZ?

i got a green sticker(defect notice)

for another 6 months our laws are pretty lax ...then come jan 1 09 we using your guys emmisions laws.....but then thats only on new imports the existing ones only have to come in under 95 decibels.

existing cars dont have a emissions test, just a decibel reading, they can be defected if they are excessivley smokey

so to answer your question...side exit dump pipes yes...... exccesive noise no.

Edited June 11, 2008 by nizmonut

[Spoolup]

Mine is 89 db, 3.5 inch dump into 3.5 cat, resonator and than muffler.

Custom Exhaust Specialists

[Betz]

I wonder how a super trap rear silencer would go on a turbo car.

they have some adjustability in terms of flow and exaust noise... still dont know if I like the idea of a diffuser in the way of my exaust gasses tho..