Exhaust decibels

reworht · 11th March 2020, 16:11

Whilst I admit to having a Peco big bore silencer on my Ford Anglia rally car many years ago, the level of noise from some 'modified' cars nowadays is simply ridiculous. My next door neighbour (who thinks he's a mechanic - main tools a 5lb lump hammer and a battery powered rattle gun) and his mates have a number of Honda Civic Type Rs and they seem to have competed to fit the noisiest possible exhaust. One of their cars has been parked up on the road for a while, so I checked its legitimacy on the DVLA site. Lo and behold, its MOT has expired - but interestingly, one of the failures was:-
Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition (8.1.1 (a)) - and the fault was listed as Repair immediately (major defects): too.
Have I read somewhere that some ANPR or Speed Cameras have the ability to record a vehicle's noise level ?

Lancpudn · 11th March 2020, 16:31

It's the same in my neck o the woods too Rod, They know PC Plod isn't around any more & they've turned the local roads into race tracks, You can hear those dump valves & loud exhausts tearing around the streets into the early hours every night.

There's one particular corner they use for 'drifting' and the house there has a permanently wrecked fence.

Odd Job · 11th March 2020, 16:33

Some apparently can check the drive by Db on a vehicle, but they are rare.
Get pulled over by a traffic cop or traffic enforcement officer and a hand held Db meter comes out!
A friend of mine got pulled last year with his classic Mini.
Trying to argue that "open pipes" save lives because people distracted crossing the road while using mobile phones as an excuse didn't go down too well!
No sense of humour some people!

reworht · 11th March 2020, 16:51

This is what Google says:-

The legal noise level is 82 decibels. A busy high street will produce a background noise level of around 80 decibels. But the loudest exhaust measured so far by one Welsh police force registered 107 decibels – the same as a pneumatic road drill, chainsaw or an aircraft taking off from 300 metres away.

rrobson · 11th March 2020, 19:43

I try to do a few track days a year, and they have very strict noise limits, although higher than the legal road limit they range from 97 to 103 drive by (so there's a monitoring system maybe 20m from the track in places) and the noise of some of the cars is crazy given how infrequently the limit is exceeded. So 107 decibels is quite impressive! Thing is there's sensible and idiotic...

trikey · 11th March 2020, 21:27

Quote:

Originally Posted by reworht

Welsh police force registered 107 decibels

Bet I could beat that

Odd Job · 12th March 2020, 07:01

Quote:

Originally Posted by trikey

Bet I could beat that

I've messaged my mate to see what his car was recorded at.
I'll be back!

Odd Job · 12th March 2020, 07:28

He's got back to me, 103db.

Still loud though!

rrobson · 12th March 2020, 20:03

Wonder what the noise of the 75 Colin furze modified was? There's a vid on YouTube somewhere...

11th March 2020, 16:11	#1
reworht This is my second home Honda HR-V 1.6 i-DTEC SE Navi 5dr Diesel Hatchback Join Date: Apr 2012 Location: North Yorks Moors Posts: 14,446 Thanks: 782 Thanked 2,156 Times in 1,497 Posts	Exhaust decibels Whilst I admit to having a Peco big bore silencer on my Ford Anglia rally car many years ago, the level of noise from some 'modified' cars nowadays is simply ridiculous. My next door neighbour (who thinks he's a mechanic - main tools a 5lb lump hammer and a battery powered rattle gun) and his mates have a number of Honda Civic Type Rs and they seem to have competed to fit the noisiest possible exhaust. One of their cars has been parked up on the road for a while, so I checked its legitimacy on the DVLA site. Lo and behold, its MOT has expired - but interestingly, one of the failures was:- Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition (8.1.1 (a)) - and the fault was listed as Repair immediately (major defects): too. Have I read somewhere that some ANPR or Speed Cameras have the ability to record a vehicle's noise level ? __________________ [SIGPIC][/SIGPIC] Rodney - you plonker! ... but more commonly known as Rod !

11th March 2020, 16:31	#2
Lancpudn This is my second home MG ZS EV Join Date: Oct 2015 Location: Lancashire Posts: 15,580 Thanks: 4,591 Thanked 3,427 Times in 2,565 Posts	It's the same in my neck o the woods too Rod, They know PC Plod isn't around any more & they've turned the local roads into race tracks, You can hear those dump valves & loud exhausts tearing around the streets into the early hours every night. There's one particular corner they use for 'drifting' and the house there has a permanently wrecked fence. __________________ Blessed are the tea makers. http://www.dailymotion.com/video/x3b...auto-2000_auto

11th March 2020, 16:33	#3
Odd Job Gets stuck in MG ZT 2.0 cdti Join Date: Aug 2019 Location: Derby Posts: 909 Thanks: 298 Thanked 191 Times in 149 Posts	Some apparently can check the drive by Db on a vehicle, but they are rare. Get pulled over by a traffic cop or traffic enforcement officer and a hand held Db meter comes out! A friend of mine got pulled last year with his classic Mini. Trying to argue that "open pipes" save lives because people distracted crossing the road while using mobile phones as an excuse didn't go down too well! No sense of humour some people! __________________ ….And the latest thing to break is..... ### MG STANDS FOR "MY GREMLIN" !!!

11th March 2020, 16:51	#4
reworht This is my second home Honda HR-V 1.6 i-DTEC SE Navi 5dr Diesel Hatchback Join Date: Apr 2012 Location: North Yorks Moors Posts: 14,446 Thanks: 782 Thanked 2,156 Times in 1,497 Posts	This is what Google says:- The legal noise level is 82 decibels. A busy high street will produce a background noise level of around 80 decibels. But the loudest exhaust measured so far by one Welsh police force registered 107 decibels – the same as a pneumatic road drill, chainsaw or an aircraft taking off from 300 metres away. __________________ [SIGPIC][/SIGPIC] Rodney - you plonker! ... but more commonly known as Rod !

11th March 2020, 19:43	#5
rrobson I really should get out more....... 75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010 Location: Pontefract Posts: 2,643 Thanks: 17 Thanked 295 Times in 218 Posts	I try to do a few track days a year, and they have very strict noise limits, although higher than the legal road limit they range from 97 to 103 drive by (so there's a monitoring system maybe 20m from the track in places) and the noise of some of the cars is crazy given how infrequently the limit is exceeded. So 107 decibels is quite impressive! Thing is there's sensible and idiotic... __________________ How to view a car - everything you need to help you inspect a used car VIS motor tester avalible to local members Injector removal tool and auto gearbox pressure tester now available

12th March 2020, 07:28	#8
Odd Job Gets stuck in MG ZT 2.0 cdti Join Date: Aug 2019 Location: Derby Posts: 909 Thanks: 298 Thanked 191 Times in 149 Posts	He's got back to me, 103db. Still loud though! __________________ ….And the latest thing to break is..... ### MG STANDS FOR "MY GREMLIN" !!!

12th March 2020, 20:03	#9
rrobson I really should get out more....... 75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010 Location: Pontefract Posts: 2,643 Thanks: 17 Thanked 295 Times in 218 Posts	Wonder what the noise of the 75 Colin furze modified was? There's a vid on YouTube somewhere... __________________ How to view a car - everything you need to help you inspect a used car VIS motor tester avalible to local members Injector removal tool and auto gearbox pressure tester now available