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View Full Version : Noise restriction. Measuring dB.


giblets
05-12-2005, 12:46
How can I find out how loud my exhaust is? I don't want to turn up to a track day and be told that I can't run...

I'm currently running a Nur Spec R with no bung..
stevec
05-12-2005, 13:46
there are some mobiles (nokia I think) which have a sound meter on them.

hold it against a stick so it is 75cm from the tail pipe and at 45 degrees from the ground.

alternatively if you turn up at a track they will often do it for you free of charge.

good luck
Steve
cossykiller
11-12-2005, 23:56
i have the same but i do have the bung, to be honest the bung dont make a lot of difference but it might to the decibel reader.

anybody else have a blitz nur that has been tested?
mine is a s14a with no cats, full downpipe back nur.
cossykiller
11-12-2005, 23:57
em not sure what i did there:rolleyes:
pete shrimp
12-12-2005, 00:46
Maplins do a tester for ~£30 IIRC, I keep meaning to get one.
SM
12-12-2005, 06:14
Book-a-Track will hire you one to test your car.
http://www.bookatrack.com/-pp?15
£9 included P&P both ways
Or turn up at any track and ask. (well ask before you turn up, phone them).
unipsycho
12-12-2005, 07:50
there are some mobiles (nokia I think) which have a sound meter on them.

Yes the rubber outdoor type ones have them :thumbs:
giblets
12-12-2005, 09:53
Book-a-Track will hire you one to test your car.
http://www.bookatrack.com/-pp?15
£9 included P&P both ways
Or turn up at any track and ask. (well ask before you turn up, phone them).

Cheers SM :thumbs: I'll rent one.
JONXLR8
18-12-2005, 17:33
I'm hoping to do my first track day next year and i was wondering the same thing now i've got the Apex exhaust on with decat and Dano front pipe.

There's a sound level meter on here for £9.52 + p&p, which is quite a bargain i reckon.

http://www1.uk.conrad.com

Only problem is, dont they need calibrating before they can be used?