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Online 3alfa3

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Re: New laws = new exhaust
Reply #10 on: October 31, 2021, 12:30:12 PM
In Croatia, Euro regulation aplies. For my bike (2020), thats 97db@4750rpm + 5 db tollerance: 102db@4750rpm stacionary  (that means even full system could be legal soundwise, but is not legal). Exhaust must be homolagated for road use, no matter what noise is measured, and aftermarket headers usually are not homologated (don't know if there is one that is).

My (fully legal) Z750 with Leovince LV ONE slip on (with db killer) measured 98db@5250rpm at MOT and was much, MUCH louder than my stock Z900 exhaust.
Last Edit: October 31, 2021, 01:18:59 PM by 3alfa3

Offline RobZ900

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Re: New laws = new exhaust
Reply #11 on: October 31, 2021, 12:57:48 PM
That might be why I can get away with the sound level of mine then. If its 97dB + a tolerance in the EU and we accept EU rules as well as British law, mine would fall within that limit. Theres no emissions testing for bikes here and the only stipulation for exhausts is that it isnt marked with something like not for road use or race use only. Doesnt need to be type approved, though I wouldnt be surprised if we end up going like Germany eventually where everything has to be type approved and signed off. Theres something in the media at the moment about a change in the law to make it illegal to alter anything on the bike relating to emissions, which would basically kill off aftermarket exhausts. Would also leave a big question mark over ECU mapping.
Motorcyclist - noun (moh-ter-sahy-klist)
: a person willing to take a container full of flammable liquid, place it on top of a hot, moving engine and then put the whole lot between their legs!

Online 3alfa3

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Re: New laws = new exhaust
Reply #12 on: October 31, 2021, 01:18:38 PM
*Originally Posted by RobZ900 [+]
That might be why I can get away with the sound level of mine then. If its 97dB + a tolerance in the EU

97db@4750rpm only for 2020 and onwards, 2017-2019 are 91db@4750rpm.


*Originally Posted by RobZ900 [+]
.....like Germany eventually where everything has to be type approved and signed off.

In Croatia, sadly, is the same.
Last Edit: October 31, 2021, 01:20:39 PM by 3alfa3

Offline RobZ900

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Re: New laws = new exhaust
Reply #13 on: October 31, 2021, 01:31:22 PM
Thats odd, why is the newer model allowed to be 6dB louder?
Motorcyclist - noun (moh-ter-sahy-klist)
: a person willing to take a container full of flammable liquid, place it on top of a hot, moving engine and then put the whole lot between their legs!

Online 3alfa3

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Re: New laws = new exhaust
Reply #14 on: October 31, 2021, 01:45:20 PM
*Originally Posted by RobZ900 [+]
Thats odd, why is the newer model allowed to be 6dB louder?

Dont know, thats how is homologated (and 97db@4750rpm  is on the sticker on the frame). Breadbox is smaller, maybe simpler inside with less obstructions.....
It is definitely louder than 2017-2019 (compared to stock 2018 Z900 my friend have), but much quieter than my Z750 which was measured @ 98db.

I guess in reality, it would be around 88-90db, if not less, but is homologated as max 97db.
Last Edit: October 31, 2021, 01:50:01 PM by 3alfa3

Offline Its about speed

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Re: New laws = new exhaust
Reply #15 on: October 31, 2021, 05:58:41 PM
Probably a new tool is going to become useful.

A decibel sound meter might be a good idea. They are priced cheap to expensive.

A friend of mine carries his in his gear bag on the bike. When somebody wants to know, he can make a quick reading. The thing already paid for itself by avoiding an unnecessary excess noise ticket. The LEO was impressed by the tool because he was off the hook. The hangup is the technique specified by the local regulations. Until they become standardized, who knows?

Offline zeta

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Re: New laws = new exhaust
Reply #16 on: November 20, 2021, 03:37:30 PM
It's funny how different the allowed max dB is for different bikes. My current bike (Tuono V4) has 107 dB @ 5000 rmp stated in the badge. In EU there's a tolerance of +5 dB(A) to what is in the badge, so I can have 112 dB without issues. I have a race Akra though so it's probably not quite legal in that sense. The good thing is that the police has other things to do and we don't have any yearly inspections for bikes (yet...).

Offline freekoo1772

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Re: New laws = new exhaust
Reply #17 on: November 22, 2021, 01:18:27 PM
*Originally Posted by Zed62 [+]
I wish my country would enforce the noise laws that we have but no one seems to care about.  The racket from unmuffled motorcycles is very annoying here in Canada.  I would love to live in a country where vehicles are quiet.  My Z900 will never get a noisy exhaust.  Let's be ambassadors for motorcycling - if we do not we will be banned from riding eventually.

Totally agreed. Bought my Z900 is March and still haven't felt a need for performance exhaust. However here in India most SBK/Naked Bike owners prefer the SC Project CRT Exhaust for making a statement of "arrival" and scaring the sh#t out of pedestrians. Luckily the police have been doing good work by stopping such rider, removing the exhaust and crushing them with a road roller :008:
Hopefully the owners here will learn there is a place for such exhaust and that's called a racetrack!!!

Offline MZ900

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Re: New laws = new exhaust
Reply #18 on: December 01, 2021, 08:18:17 PM
ive just simply made a new frame sticker 96db@4750  :008:
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Offline Zed62

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Re: New laws = new exhaust
Reply #19 on: Yesterday at 03:25:44 AM
How good are you at counterfeiting credit cards?
ZED62

Yamaha HSI, RD400, RD350 LC, Honda CX500, Seca650, Z400, Z900