Dunno if this is the correct place to put it, but it's not model-specific so I though that this would do...

I can't seem to find any hard and fast rule here.

For bikes, a max of 93db is allowed and is measured at 3/4 max revs at 45 degrees to the exhaust and 1 metre away.

For the SVA test (strict MOT-type thing for kit cars) a max of 101db is allowed.

At MOT time, your car can fail if the exhaust is 'significantly louder than a standard exhaust in a good state of repair'

Can anyone point me to a rule/value/soemting balck and white that states what you can get away with? Reason for asking is that I've just stuck a backbox on mine and want to know where I stand with regards to spot checks etc.

http://uk.answers.yahoo.com/question/index?qid=20081022113725AABu3E9

i thought it was about 90db.

i want to know if mines to loud.

i used to have a DB measurer on my phone:bang:

damn it

I think its a grey area, some old cars like a shelby cobra are deafening but my mate got a ticket for excessive noise purely becuase of his dump valve!! wasnt even noisey. think its police disgretion

my old punto had a deafening exhaust, and it passed MOT no bother. With an educated guess, it was putting out well over 120db, my ears actually started to hurt after long distances.

120db

mines 87 and its loud, 120db is low flying aircraft loud

the standard noise is on the V5C

fiat bravo Tjet 150 sport stood still 78dB, moving 74dB.

the saxo is quieter but sounds louder because of the difference in notes

red-devil said:

120db

mines 87 and its loud, 120db is low flying aircraft loud

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err......


yeah sounds about right never again!

never had a problem with my punto's exhaust, iv been pulled plenty of times for it being 'loud' but they never said its 'too loud' and i have a de-cat too.

bare in mind iv never heard a louder exhaust on a car than mine, its a de-cat straight through to twin exit backboxes.

just a backbox will be fine, your just too worried lol.

theres no way that system was louder than mine though, and i should know

Munkul said:

theres no way that system was louder than mine though, and i should know

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Do you guys never get embarrassed while trickling through quiet little villages or turning up in your street in the middle of the night?

Also Munkuls punto peen is bigger!

StevenRB45 said:

Do you guys never get embarrassed while trickling through quiet little villages or turning up in your street in the middle of the night?

Also Munkuls punto peen is bigger!

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i tended to keep it in higher revs where possible and make as much noise as possible down my road

StevenRB45 said:

Do you guys never get embarrassed while trickling through quiet little villages or turning up in your street in the middle of the night?

Also Munkuls punto peen is bigger!

Click to expand...

nah not really. The lass that i used to take to college would hear the car literally 10 min before i got to her door though

it drove me crazy in the end, and tbh sometimes i get sick of the reasonable one on the curent car.

When I'm with a insurance company that allows mods under 25 i'll be getting one of these....mmmm noise cannon...otherwise known as an HKS silent power keeping it japstyle...

StevenRB45 said:

Do you guys never get embarrassed while trickling through quiet little villages or turning up in your street in the middle of the night?

Also Munkuls punto peen is bigger!

Click to expand...

Nope I really missed being able to rumble up behind some slow-moving vehicle, drop a gear to up the revs and scare the heebie-jeebies out of them :devil: Mine's not overly loud though and can rumble along quietly enough when I want to.

my mates 328 makes a superb noise with standard pipes on (its cabrio though)

i dont bib anymore i rev instead:devil:

might make a vid of my zorst at the weekend:chin:

i love my exhaust,

it helps **** my neighbours off

mine can set off car alarms, i love it

psychofox said:

mine can set off car alarms, i love it

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yeah boi i set one off in sainsburys the other day