Jump to content
SAU Community

When Cops Test Ur Exhaust


GRACER
 Share

Recommended Posts

Just wondering.. when police test your exhaust.. what do they do?

i know they rev it like to 3000rpm and it has to be less than 90db

but like a few nites ago i was watching some NZ cop series.. and they did some testing on the exhaust

it sounded like the cop held it at 3000rpm.. then when they did the test... it sounded like the policeman put more throttle on it

the guy got busted for like 106db.. got a defect sticker on his car

anyone know? i'm a bit confused

Link to comment
Share on other sites

  • Replies 62
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Guest trikdoutvl

caint speak for nz, but i got pulled over before n the coppa reved the shit outta the car n then goes "dehhhh thats a bit loud son" n i said "yeh no shit its loud when u hold the accelotor flat" but he diddnt have any gadgets except his hears

wats real unfair is that harleys are a million times louder then anycar n there alud on the road

thats my vent for the day

Link to comment
Share on other sites

caint speak for nz, but i got pulled over before n the coppa reved the shit outta the car n then goes "dehhhh thats a bit loud son" n i said "yeh no shit its loud when u hold the accelotor flat" but he diddnt have any gadgets except his hears

wats real unfair is that harleys are a million times louder then anycar n there alud on the road

thats my vent for the day

another question... r motorbikes, truck & buses the same? i.e 90db? or do they have another figure?

Link to comment
Share on other sites

I've been sent a letter home from the EPA surprisingly for a reported loud exhaust, mine is pretty darn quiet. Someone must of dobbed me in.

Anyways had to go to a muffler shop and get it tested.

For a Skyline, the letter said it had to be revved to half the rev range, but mine said 4500rpm. Got it tested, all was under until the throttle was lifted at which point a couple of small pops set the reader over 90db.

Link to comment
Share on other sites

I've been sent a letter home from the EPA surprisingly for a reported loud exhaust, mine is pretty darn quiet. Someone must of dobbed me in.

Anyways had to go to a muffler shop and get it tested.

For a Skyline, the letter said it had to be revved to half the rev range, but mine said 4500rpm. Got it tested, all was under until the throttle was lifted at which point a couple of small pops set the reader over 90db.

so what happened?

did u pass? :domokun:

Link to comment
Share on other sites

Engineers certificates.

Problem is that anything that is non standard, i.e aftermarket, is a defect.

Harleys generally come standard, hence no defect.

really? so ur saying.. if nissan puts like a 6inch exhaust.. and it was stock... then it would be legal?

even if it was over 90db?

Link to comment
Share on other sites

no. for a car to be able to be registered it has to meet ADR standards. that includes from factory.

but also motorbikes have different rules to cars, otherwise they would be in trouble for all sorts of things that apply to cars, like no number plate on the front, tyre size differences, etc.

and buses and trucks are under different rules because they aren't considered light vehicles. and the fact that you need a different licence to drive them then it is fair to say that they shouldn't have to meet the same emission laws. if you did make them meet the emissions laws then there would be twice as many as there are now as they wouldn't have the power (well torque) to carry as much as they do.

Link to comment
Share on other sites

Harleys generally come standard, hence no defect.

that is not true. motor bikes are subject to different emissions law. as do busses.

as for NZ testing? that has no relevance for you mate if you live in sydney :domokun: so don't worry about it.

Link to comment
Share on other sites

no. for a car to be able to be registered it has to meet ADR standards. that includes from factory.

but also motorbikes have different rules to cars, otherwise they would be in trouble for all sorts of things that apply to cars, like no number plate on the front, tyre size differences, etc.

and buses and trucks are under different rules because they aren't considered light vehicles. and the fact that you need a different licence to drive them then it is fair to say that they shouldn't have to meet the same emission laws. if you did make them meet the emissions laws then there would be twice as many as there are now as they wouldn't have the power (well torque) to carry as much as they do.

Cool Thanks mad082.. i get what u mean!! :domokun:

:D

that is not true. motor bikes are subject to different emissions law. as do busses.

as for NZ testing? that has no relevance for you mate if you live in sydney :) so don't worry about it.

haha Beer Baron.. after watching that cop show.. it just got me thinking.. coz.. isn't NZ and AUS police.. kinda the same?

anyways how does aussie cops do it? :P

Thanks!

Link to comment
Share on other sites

wats real unfair is that harleys are a million times louder then anycar n there alud on the road

thats my vent for the day

harleys are in a different class, hence different regulations. me muffler man told me that.

so stop the crying, u cant compare yourself to a bike.

no more debate on this subject...its a clear cut law, ask your muffler mate next time.

Edited by r33cruiser
Link to comment
Share on other sites

harleys are in a different class, hence different regulations. me muffler man told me that.

so stop the crying, u cant compare yourself to a bike.

no more debate on this subject...its a clear cut law, ask your muffler mate next time.

R33cruiser.. were not debating abt how bikes r louder then cars and how it's unfair..

i was just wondering about how police check db's on an exhaust.. then trikdoutvl... said how it's unfair that harleys r louder than normal cars :domokun:

:D

Link to comment
Share on other sites

All motorcycles are tested at a higher RPM was 5000rpm or where maxium torque is made last time I checked.

All motorcycles must be manufactured to meet strick laws including the euopean DB of 89. Guess what Australia is a prinprick in sales and they don't make them lowder just for us. Last time in the ACT we were pushing for 95db across all bikes, but I think it's set to 93db or 96db for those over 20 years old (not sure on exacts here). Australian's often put aftermarket mufflers on the bikes to obtain a crisper note.

Link to comment
Share on other sites

As I understand it, there are binding circumstances that have to be adhered to when conducting a dB test as it falls under relevant Weights & Measures Legislation- I'm sure Geoff would know more.

From memory it is something like 2m behind the car & within a certain angle in relation to the tip etc at a given rpm.

They cannot simply stand there & aimlessly point a measuring device at the vehicle, rev the snot outa it & come up with a pass or more usually a fail without conducting the test correctly.

As for bikes, apart from the "look at me" wankers & the plastic gangsters on their tractors (Harleys), the main reason for having a loud pipe on a bike is so the stereotypical Aussie knob can actually HEAR when they are near a bike because the old "sorry I didn't see you" excuse for putting someone on a bike in hospital & worse happens WAY more than it ever should & simply isn't good enough.........

& before someone inevitably comes out with it, yes there are some idiots on bikes that simply shouldn't be on the road due to their conduct, lack of skill & simple dis-regard for others but that sadly is not a unique occurrence, across any given sub-culture.

/rant

Link to comment
Share on other sites

Mate ive got a solution for You, I have a VERTEX Muffler which has a electronic silencer in it , in other words when the boys in blue pull you over you just press the switch and the muffler Closes Up :domokun: Ive used it many times as cops have pulled me over and they had nothing on me :D

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share




  • Similar Content

  • Latest Posts

    • I'll snap up some photos when I'm back home, in the office today meeting my "in the office" quota. Have 2x Teams calls scheduled in, office culture they reckon.   I've never owned a proper off the shelf sub, I've always made or modified broken ones with Jaycar plate amps and/or car subwoofer drivers. The current (and broken) subwoofer has a proper home driver in it, Dayton driver, thos one https://www.daytonaudio.com/product/118/rss265hf-4-10-reference-hf-subwoofer-4-ohm FS of 25Hz, which is low but not low enough. Yeah, I think they were brought out to the market to compete with SVS. I would love a SVS PB-3000 but they're not cheap, especially after their price hike. From reviews online, it does look like the Tonewinner D6000 would destroy and with good amount of money saved too.
    • yeah, that happens too.  I'm really enjoying 4WDing at the moment, seen a few beautiful spots and want to go explore more of this enormous country.  The 370Z got a clutch LSD in it and a track day, great fun.  Getting the back end sorted out really rejuvenated my enthusiasm for driving it hard, the viscous one is poo especially in such a short and wide chassis.  The VLSD unpredictability was more benign in a long and skinny Skyline.
    • With my pre/power I use a remote trigger cable(3.5mm jack each end). I turn tv on, it turns both on via ARC. Or, just the pre with the remote or its streaming software, turns on both. Not that difficult at all. Obviously,  you would also want to actually update/upgrade over other factors in your life(bills, family, other hobbies, etc)
    • Yeah, nightfall was very "meh". And I'm crap at pvp, so feels like everyone has cheats(it's just my lack of skill). Final shape has been pretty good. New raid and dungeon are pretty good. If you want to give it a go, probably wait until it's on sale. But, as usual, most of it feels very familiar. 
    • This morning was Kingswood's Microscopic Wars. It is the album's 10 year anniversary this year and we went to see them play the whole album as a special show a couple of months back. Was pretty spectacular.
×
×
  • Create New...