bike exhausts on cars

[T.J.]

Wondering how good/bad these are..

I only have one silencer on my car (back box), and it's stupidly loud. I'm likely to get pulled over at some point.
I'm thinking of swapping the rear box for a bike one. Is that likely to make it sound quieter? Bikes only have the 1 and, although loud, they don't wake the whole town like mine does atm

[volvosneverdie]

Wondering how good/bad these are..

I only have one silencer on my car (back box), and it's stupidly loud. I'm likely to get pulled over at some point.
I'm thinking of swapping the rear box for a bike one. Is that likely to make it sound quieter? Bikes only have the 1 and, although loud, they don't wake the whole town like mine does atm

depending on whats currently on, im guessing louder.

why you worried about a pull? is there a legal db limit?

I thought as long as the exhaust system was complete and solid, john law could grin and bare it.

[T.J.]

Really? I thought they could fine you for making too much noise.. breach of the peace or something

[Nimminz]

I'm pretty sure there is a Db limit, and i wouldn't be surprised if plod could do you just for being 'loud'. 'fraid i can't help on the bike can front though

[volvodspec]

you can't really compare a bike-engine characteristic with a normal car engine, bike's have really short runners/pipe for a start, if its an open absorbtion silencer, it will damp but can still be a bit loud, depends on what you take.

if it stays loud you can allways mount a silencer in the middle of the exhaust

[Dan91]

Law wise anything other than factory fitted original exhaust systems is illegal.

According to the law anything that isnt a direct replacement backbox and that is louder than factory isnt allowed

However they hardly ever inforce it, and as far as i know unless you're a complete wanker/cocky to the police they wont enforce it.

I had a jap can on my civic previously that was VERY loud, i got pulled for it twice and brought up on it, producers given both times, had it stamped without changing anything

[azza_126]

i believe the road legal db is 101 as i found this on a search engine

Statutory Instrument 2001 No. 25
The Motor Vehicles (Approval) Regulations 2001

© Crown Copyright 2001

Statutory Instruments printed from this website are printed under the superintendence and authority of the Controller of HMSO being the Queen's Printer of Acts of Parliament.



Excerpt:

13 Noise and silencers 1. The vehicle shall be fitted with an exhaust system including a silencer such that the exhaust gases shall not escape into the atmosphere without first passing through the silencer.

2. When -


(a) the vehicle is held stationary on a level surface such that there is an unobstructed area not less than 3 metres wide all around the vehicle; and

(b) the engine by which the vehicle is propelled is run at a constant rotational speed of 3/4 S,


the noise measured at 0.5 metres from the exhaust outlet at 45 degrees to the axis of the outlet pipe in a horizonatal plane, shall not exceed 101db(A).


For the purposes of this item, "S" means the rotational speed at which maximum power is produced. Paragraph 1 shall only apply to vehicles propelled by an internal combustion engine.

[charlieog1243]

mayb a old thread but man up i have no back box police have not said anything even when mine is popping and backfiring

[T.J.]

Well you carry on being antisocial then.. me? I'm a bit more sensible than that.

imo this sort of attitude just gives modified cars a bad reputation

[charlieog1243]

Well you carry on being antisocial then.. me? I'm a bit more sensible than that.

imo this sort of attitude just gives modified cars a bad reputation

no louder than the corsa's that drive round with massive exhuasts on i dont drive round at 4am booting it i drive normal hours and its fairly quit compared to some of the cars that are around here but i see your point wasnt tryin to be a d*ck

[Attack2001]

Straight through is where its at! Silencers are for pussys As you say, its all the badmans driving around in there corsas and novas with amplifying exhausts on that gives modified cars a bad name...

[charlieog1243]

Straight through is where its at! Silencers are for pussys As you say, its all the badmans driving around in there corsas and novas with amplifying exhausts on that gives modified cars a bad name...

damn right going to make a straight through for mine you got any pics of yours?

[Si-340t]

No comment!

[Attack2001]

Straight through is where its at! Silencers are for pussys As you say, its all the badmans driving around in there corsas and novas with amplifying exhausts on that gives modified cars a bad name...

damn right going to make a straight through for mine you got any pics of yours?

Nah mines running standard 1.4 zorst at the moment lol, my dads race car has a straight through on it, sounds the muts nuts!!!

No comment!

Thats banging!!! I bet the neighbours are going to love you

[Si-340t]

It's not to OTT from the outside, drones a bit inside (no soundproofing).

I leave for work at 3:30am on Monday mornings and haven't had any complaints yet