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Ok with the increasing bullshit with Police blitzing I want to diagnose my exhaust Db myself and keep the device in my glove box.

Should I ever be unlucky and be pulled over for inspection I am going to video the Police and record all their suspicions for perusal for my lawyer.

I will insist on an on the spot test with my device to illustrate my awareness.

I hope the Police will encourage my actions.

What is the distance for the microphone off the exhaust outlet.

I've read 1 metre, 525mm,... seems to be no constant clear instruction.

How does the government expect us to conform with laws that aren't clearly stated.

Anyway,

I'm one not to back down.

I'm 43 years old , have spent probably $43000 on my car, and will not quietly cage it.

I've had my car since 2001 and haven't one infringement.

So far I've been left alone and I respect the Police for that.

I don't want that to change.

There it is..

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Last time I checked, it was 1m, at 45degrees of the exhaust tip.

Unfortunately, I suspect police will think along the lines of, "yeah, use HIS gauge, pfft, he must have tampered with it."

Hope this helps.

It wont make any difference what you spend. You dont even hve to be stopped to be directed to the DECC. Notices can be mailed to you after Police, Council, or even a member of the public contacts the DECC. They send you a notice of directed inspection and you front up or cop a fine.

If you are stopped and it is a case that they believe your vehicle is loud etc, then it is merely that. They dont have to be experts or carry the equipment. That is what a defect notice or DECC notice is for. To send you to an expert who has the testing equipment. In the end the actual testing criteria is very strict and depends on aa lot of factors that most people gernerally wouldnt kno or be able to test for. Simply put it is 90db for a new car and 96 or an old one.

Why dont you just contact the DECC for the detail and even book it in for a test.

You could even spend less by reading this document from the DECC.

http://www.environment.nsw.gov.au/resources/noise/10146VehicleNoise.pdf

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