I wasn't really sure where to put this, it's about trackdays, but involves mods.

Just how loud is 100dB(A)?
Apart from trackside, where can I get my car tested?

I have a 3" downpipe and a 2.5" Mongoose system, so I am not expecting to have any trouble, but I would rather be safe than sorry.

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1991 Jap ST185A
ST205 Head Gasket.
Some random RV & no-name BOV
Blitz Nur-spec SS backbox
Apexi Air Filter

ST205 Front Calipers - Yes, really!

100dB is loud

For reference my unbaffled Blitz comes in at 96-97 dB depending on who measures it
100dB is twice as loud as that, and the Blitz is not quiet

You should not have any isses, as you said

I have been trying to find out teh specs of each track for noise limits - they seem very fluffy on this subject - just liek steves info (I would have expected more of you steve!)

No one semes to specify teh precise criteria of distance, rpm and if it shoudl be "A" weighted (dB or dB(A) ?? )

100dB & 100dB(A) are loud. 100dB(A) is only just noticeably louder than 97 dB(A) BUT - has twice the power level in Watts. (its a Logarithmic thing)

Where canm you get it measured - I can if you know the precise distance, rpm and weighting. I am an acoustic consultant so have all the kit

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JP
GT4DC Treasurer

Grey St185 RC
Silver BMW E46 M3
Multicolour yawn Honda VFR400
Silver Honda Civic Type-R

I like to keep it simple

I don't know if you were at rallyday Doom

If so there were a pair of deafening R5 rally cars there. Bith (alledgedly lol) passed a 100dB limit

Hi..

i have a db meter if you want to use it..

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Black UK 96 205 shed with heater full on telemetry.

project six million dollar 185, faster, stronger, lighter than before.

You could approach your local council/environment services section, they have the equipment to measure the noise (They are always out in Southend to catch the Chavs & also do work with complaints about noisy neighbours).
Only problem is that if your car is louder then the acceptable levels (Havent a clue what they are) they could demand you change the exhaust.

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ST205 WRC #0002249

I would head down to your nearest circuit on a trackday before you intend to go and ask them if they will test your car.

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GT4DC Events Co-ordinator
1996 ST205 UK