Z4M - H&S exhaust @ Bedford Autodrome?
Z4M - H&S exhaust @ Bedford Autodrome?
Author
Discussion

funkdude

Original Poster:

29 posts

214 months

Tuesday 3rd March 2009
quotequote all
Hi there fellows,

"The noise limits at Bedford Autodrome will remain unchanged at 101dB(A) static (measured 0.5m from the exhaust at a 45’ angle at ¾ maximum revs) and 87.5 dB(A) drive-by at 20 metres."

May I ask if anyone have a standard H&S cat back fitted on their Z4M who has experience with Bedford Autodrome? I am going to their trackday in March and I am not sure if I will pass their noise test. Dont have a dBA metre myself so I will need to rely on your advice.

When I collected my car H&S told me the noise level was 97dBA at 4,500rpm... but that figure cannot be applied to Bedford since 4,500rpm isnt exactly 3/4 max revs.

Thank you very much!

kentmotorcompany

2,471 posts

233 months

Tuesday 3rd March 2009
quotequote all
No, but I'd love to hear how one sounds.

Any links?

funkdude

Original Poster:

29 posts

214 months

dan101smith

17,009 posts

234 months

Tuesday 3rd March 2009
quotequote all
You can always swing by in advance and get a reading done - or, I think Maplin do a meter so you can test it yourself.

I went to Bedford on Saturday and they made an even bigger point of the noise limits than they normally do, so don't expect any slack from them.