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Location:
ipswich queensland
Registered:
April 2004
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how is a db test suposed to be done??
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Mon, 02 May 2005 08:02
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i just got defected for my exhaust so i got a brand new muffler put in and the guy tested it about a foot from behind the muffler and it is still 2.55db too loud.
how is the test suposed to be done??
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: how is a db test suposed to be done??
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Mon, 02 May 2005 08:21
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@ 75% of peak power RPM wise.
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: how is a db test suposed to be done??
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Mon, 02 May 2005 08:22
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Oh, it varies from state to state.
Call your Transport Department.
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Location:
Newcastle
Registered:
July 2003
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Re: how is a db test suposed to be done??
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Mon, 02 May 2005 11:34
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what cruzsida has put up is the correct way by NSW standards im pretty sure that is rather universal though..
if they used the "about a foot" measurement take your right boot and place firmly up testers backside as thats about as useful as dyno testing with the handbrake on.
regardless of any state to state variations they MUST be getting out the tape measure/ruler/marked stick or some form of measuring device and getting the measuring location correct.. aditionally they have to be a certain distance away from thigns that could casue reverbaration such as walls, other vehicles etc etc
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Location:
Newcastle
Registered:
May 2005
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Re: how is a db test suposed to be done??
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Mon, 02 May 2005 11:47
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I know that the legal limited is 92 Db in NSW...My mate has a lancer with 4g63B in it, at 7000rpm the exhaust Db is just on 92, which isn't that loud inside the car or outside...But when it idles, its really loud...Its the same with my sisters boyfriend Mazda Familia GTR is like over 110 but hasn't had many problems with cops or RTA...lilcrash whats done to your car?Does the exhaust have the baffle plate?
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Location:
Newcastle
Registered:
July 2003
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Re: how is a db test suposed to be done??
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Mon, 02 May 2005 11:51
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legal noise limit for post 1986(iirc) is 90dB at 75% of peak power rpm. so unless the mitsu is peaking power at 10k whilist kudos if it is, i doubt.
if your mate has a 110dB familia id be more worried about deafness then cops perhaps ? 110db is bloody loud.
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Location:
Newcastle
Registered:
May 2005
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Re: how is a db test suposed to be done??
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Mon, 02 May 2005 12:01
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Mate it is fuckin loud, I used to get woken up at 2am when he come to drop off my sister,then the turbo timer is just going for 2 minutes...  You proably seen it crusin around newi toof, its silver...But otherwise the Mitsu has 145kw at the Front wheels,I'm not sure what my mate has done to it..But he said his exhaust is just on the limit and has been tested and passed...Most of the work was done up at thorton at RX engineering...
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Location:
ipswich queensland
Registered:
April 2004
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Re: how is a db test suposed to be done??
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Mon, 02 May 2005 21:36
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my exhaust is extractors-muffler(dont know wat sort, but it is a real big one)-cannon(i only bought it cause it was all i could afford at the time. i have now made a baffle out of a old exhaust tip so it should pass now. i will go and se wat they say today.
laterdays
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