Trackday db limit
- Thread starter lee0113
- Start date
Help Support S1000RR FORUM:
fast_ryan
Well-known member
- Joined
- Apr 1, 2015
- Messages
- 4,661
- Reaction score
- 8
Noise Testing
With a decatted exhaust and short silencer you may struggle to pass both static and drive-by noise testing. I would strongly advise getting your bike noise tested before you go to avoid any disappointment. The static noise limit at Snetterton is 102 dB and the drive-by limit is 98 dB and MSV enforce both pretty rigorously.
With a decatted exhaust and short silencer you may struggle to pass both static and drive-by noise testing. I would strongly advise getting your bike noise tested before you go to avoid any disappointment. The static noise limit at Snetterton is 102 dB and the drive-by limit is 98 dB and MSV enforce both pretty rigorously.
Bear in mind that the static test is by far the lesser issue of the two (static vs drive-bye), so I would suggest that you have a good margin to play with if you pass a static test
The trouble is a catalytic converter does a tremendously good job of reducing the Db output of an exhaust
If you have trouble passing tests at your desired tracks, I'd suggest contacting MHP exhausts to see what options are available to you (track can, baffle etc)
I think you'll struggle.
As Ryan says, you can get to a track before the day you can get the static test done in advance.
As Ryan says, you can get to a track before the day you can get the static test done in advance.
Last edited:
fast_ryan
Well-known member
- Joined
- Apr 1, 2015
- Messages
- 4,661
- Reaction score
- 8
Trackdays
If you plan on doing trackdays you are best off either keeping the standard OEM exhaust system; buying a full length slip-on with a baffle or fitting a full race system which has a long exhaust and a baffle. Ultimately, the quieter the exhaust the better.
If you plan on doing trackdays you are best off either keeping the standard OEM exhaust system; buying a full length slip-on with a baffle or fitting a full race system which has a long exhaust and a baffle. Ultimately, the quieter the exhaust the better.
Re: Trackdays
+1
Is kind of ironic that the only benefit Euro 4 has to UK riders is passing track day noise limits lol!
+1
Is kind of ironic that the only benefit Euro 4 has to UK riders is passing track day noise limits lol!
Possibly not, as you may find that a track can and baffle will be sufficient for your needs, and would work out cheaper than a full system. MHP can make a bespoke set up if need be
Yes indeed, I mean a full length can with plenty of wadding (I.e. Not like the current gen Akra Evo can which is tapered similar to a Megaphone can in shape)
My pleasure!
By the sounds of it you have de-catted OEM headers (is that correct?), if so you'll have several production slip-on options available, however I suspect that you'll find a cheaper alternative from MHP (the big Akra slip-on is the best part of a grand!).
Although the exup valve is an effective way to help beat a static test, I'd suggest ignoring it as you'll need to pass a static test comfortably before being able to pass a fly-bye. Unfortunately bike track days don't operate like car days which use the 3/4 throttle method for static tests (which is much more valid in the context of noise emissions), and thus it can be very misleading, and disheartening, to pass a static test but fail on track.
One final point to make you aware of, is baffles, the longer the baffle the bigger the power loss, so always look to get most of your Db decrease from a can or link pipe rather then relying solely on a monster baffle
