Got green stickered

[Alex B]

Well that really depends if pit stop told him "this is a certified reading" or "this is around about how loud your car is"

[Adamal]

Well a piece of paper with a reading on it doesn't say "We think its this loud" does it?

Theres 3 possible situations.

1. Pitstop are certified to perform these tests, have produced a result and the Police officer didn't accept it. The Police are at fault.

2. Pitstop aren't certified to perform the test. Pitstop are at fault.

3. Pitstop aren't certified to perform the test and Av was aware of this. Av is at fault.

[avinesh]

PS a pitstop DB reading aint worth the paper its written on to the cops, nor should it be. Is it a calibrated reading? What quality of DB testing tool was used. A $97 DSE/Jaycar meter?

If THEY put a limit on it, then THEY should accept a result. And if THEY have a problem with it, then THEY should go check out the place to make sure their equipment is up to standard.

As far as I'm concerned, Av has done everything required of him here. So its either the Police's fault for not accepting what they've requested (being a test to prove the loudness of the exhaust) or its the outfit that provided the test for not meeting test requirements.

So what your saying is that its sweet for me to do a test on my own car using my own equipment at any distance at any rpm in any area and that should be legal?

It is regulated and pit stop is not a certified group to do that (afaik), you expect the cops to waste their time checking the test has been carried out correctly? That's not real world is it?

It says in the rule that if you fail at vtnz coz of you exhaust noise you must get it tested by a third party an vtnz directed me towards pitstop an after i got the test done i got my wof.....they gave me a sheet with all decible readings at different levels at pitstop.......

[escortman]

i thought the law was now changed to, anything louder than factory has to be certed and the cert limit is 95db or woteva

[Alex B]

My understanding was that if it failed then it needed to be cert-ed, at which point they would take pictures of your exhaust, give you a schematic of your exhaust with a serial number and tack a plate to your exhaust stating it was cert-ed.

Got any links to that rule?

[B1NZ]

Feel free to provide an exhaust design to us folks who want to make >300rwkw with an exhaust which will be quiet yet flow nicely!

HSV do it ok.

I vaguely remember with they bought the 95DB limit out there was something about HSV's failing under that limit from the factory specs, am I wrong?

My stock V4 STI has a giant muffler and has been measured at 89DB using a msnz decibel meter, Seems really quiet during the day but I wouldn't want it any louder at night as I already get paranoid that it is going to annoy the neighbors

[Jazza]

Well that really depends if pit stop told him "this is a certified reading" or "this is around about how loud your car is"

When i went to pitt stop before my Obj Noise test (Which afaik is the only accepted dB reading) they said they wouldnt even put it on paper as their equipment wasnt accurate, he said it would be within 7dB of that reading, and then you have environmental factors, their equipment (300 bucks vs 9k for obj noise).

VTNZ told me if my exhaust wasnt clearly stock, id need an Obj noise test to pass my wof

*EDIT* To note, my obj noise test came in at 92.3dB, 94.2dB, and 94.0dB. Pittstop (Botany) came in at 85, 90, 82.

[Alex B]

Being DB is a logarithmic scale, 7db is from one reading to the next is like twice as loud.

[avinesh]

Wat he was sayin to me was the exhaust system should be stated on the lvv tag which has a list of other mods on it.....i dont think anyone has their exhaust system written on the tag itself....

[Jazza]

Yep, so Pitt stop was reading half the volume it actually was on some occasions. Plus they cant account for background noise, etc

[Jazza]

Until now, an exhaust system was allowed to be noisier than the original exhaust system, provided it was not significantly noisier. As a result of public complaints about the number of noisy modified vehicles on the road, and the difficulty in assessing what ‘significantly noisier’ means, the government has introduced more stringent requirements relating to exhaust noise effective from 1 June 2008.

A vehicle will comply with the new law if the noise from the exhaust system is similar to or less than the noise from the exhaust system that was originally fitted when the vehicle was manufactured.

The exhaust system may be noisier than the original one provided that:

* the noise output either remains well below the legal noise limits, or
* an Objective Noise Test proves that the exhaust system does not exceed the legal noise limits.

How is exhaust noise checked during the WoF inspection?

The WoF inspector uses his/her experience to assess the noise output of the vehicle compared to other identical or similar vehicles in original and good condition.

If your vehicle is noisier than it was originally, it will fail its WoF unless it is able to pass a Noise Quick Check. If the WoF inspector has a hand-held noise meter he/she will use the Noise Quick Check to find out if the vehicle is well below the noise limits.

If your vehicle has failed its WoF because of a noisy exhaust, it may be referred to undergo an Objective Noise Test.
What is the difference between the Objective Noise Test and the Noise Quick Check?

The Objective Noise Test is a stationary tail-pipe noise test procedure based on international standards and can only be carried out by an approved low volume vehicle (LVV) certifier. If your vehicle passes the Objective Noise Test the LVV certifier will attach a label to the vehicle and issue a certificate. The cost of the test is about $130–200, depending on location. It is a one-off cost provided the exhaust system is maintained in good condition and is not modified further.

The Noise Quick Check procedure is a simpler and quicker version of the Objective Noise Test, making it suitable for WoF. It is used to assess whether the vehicle is well below the noise limits or referral for an Objective Noise Test is required. The Noise Quick Check can only be carried out by a WoF inspector who has an appropriate noise meter. A fee may be charged for this check.

What do I need to do to pass the WoF?

1. Replace, remodify or repair the exhaust system so that the noise output is less than or similar to the noise output of the exhaust system that was originally fitted by the vehicle manufacturer, or
2. Undergo an Objective Noise Test if you wish to have an exhaust system that is noisier than the original exhaust. However, you may still need to replace, remodify or repair the exhaust system to bring it below the legal noise limits. An Objective Noise Test is not required if the vehicle can pass the Noise Quick Check.

http://www.ltsa.govt.nz/vehicle-ownersh ... hicle.html

Cant find the other piece of info im after

[l1ttle_d3vil]

Wat he was sayin to me was the exhaust system should be stated on the lvv tag which has a list of other mods on it.....i dont think anyone has their exhaust system written on the tag itself....

mine doesn't even mention the turbo on my cert plate, just "injected". I had to track down the original paperwork the certifier sent to ltsa and get copies of it so I could get it revinned...

he had allsorts of info on there, where the i/c was mounted, wastegate type etc etc, the people in wellington who make the plates only put what they want on them, sometimes they don't have enough room for all the mods.

[Jazza]

You get a seperate sticker that is attached to your exhaust, and a big piece of paper they tell you to carry around with a picture of it, and the specs of it

[avinesh]

Wat he was sayin to me was the exhaust system should be stated on the lvv tag which has a list of other mods on it.....i dont think anyone has their exhaust system written on the tag itself....

mine doesn't even mention the turbo on my cert plate, just "injected". I had to track down the original paperwork the certifier sent to ltsa and get copies of it so I could get it revinned...

he had allsorts of info on there, where the i/c was mounted, wastegate type etc etc, the people in wellington who make the plates only put what they want on them, sometimes they don't have enough room for all the mods.

Yes your right they dont have enough space so i got done for having a car thats certified an legal just coz a cop didnt know how to do their job properly, its a waste of my time it has ruined my whole weekend...

[avinesh]

You get a seperate sticker that is attached to your exhaust, and a big piece of paper they tell you to carry around with a picture of it, and the specs of it

This guy wasnt after any tag on the exhaust system he wanted the exhaust system to be stated on the main lvv tag....

[Mr.Phreak]

Yes your right they dont have enough space so i got done for having a car thats certified an legal just coz a cop didnt know how to do their job properly, its a waste of my time it has ruined my whole weekend...

The exhaust cert is seperate from the LVV Cert unless they've changed things

[Jazza]

You get a seperate sticker that is attached to your exhaust, and a big piece of paper they tell you to carry around with a picture of it, and the specs of it

This guy wasnt after any tag on the exhaust system he wanted the exhaust system to be stated on the main lvv tag....

This doesnt happen, because it is a seperate cert.

The LVV cert is for your mods, be it engine, chassis, suspension etc.
The Objective Noise Test is for exhaust volume, which is a seperate process and unless you payed for it/asked for it, you wouldnt have got it done the same time as your normal cert.

Mine was 150 from memory, did it the same time as my LVV cert.




So to clarify, it is in fact, your fault, not the cops. As your car isnt certified as legally quiet

[avinesh]

You get a seperate sticker that is attached to your exhaust, and a big piece of paper they tell you to carry around with a picture of it, and the specs of it

This guy wasnt after any tag on the exhaust system he wanted the exhaust system to be stated on the main lvv tag....

This doesnt happen, because it is a seperate cert.

The LVV cert is for your mods, be it engine, chassis, suspension etc.
The Objective Noise Test is for exhaust volume, which is a seperate process and unless you payed for it/asked for it, you wouldnt have got it done the same time as your normal cert.

Mine was 150 from memory, did it the same time as my LVV cert.




So to clarify, it is in fact, your fault, not the cops. As your car isnt certified as legally quiet

He looked at my cert tag an said you exhaust isnt stated here so his argument was why isnt the exhaust on here with the rest of the mods...so he basically wanted it to be on there with the rest of the mods.......the exhaust cert, is it tagged on next to the lvv cert??? Or is it just a piece of paper with a little tag on the muffler???

[avinesh]

The funny thing is i just passed a vtnz wof an im goin back there now so soon.....im just thinkin if he would have even accepted the noise cert an the tag on the muffler coz he was after one thing only an thats the exhaust to be stated on the lvv tag with the rest of the mods.....

[Alex B]

No its not on the cert, but if you had an exhaust cert I'm sure he would have taken that into account.