I currently run a decat scoob that's relatively quiet, 94dB at Cadwell last week (0.5m, 45deg static).
Before I sell my standard backbox (that I never fit, it just sits in the workshop) lemme just check I'm not going to run into a problem at the quiet circuits...
Basic problem if a car's marginal on noise, is that some of the circuits quote drive-by at some indeterminate distance rather than static. So, it's difficult to check beforehand. For example:
Donington quiet-day: 98dB drive-by (static - no idea, and the circuit website is useless on this)
Bruntingthorpe: 87dB drive-by (equiv to 98dB static according to a quick surf of the web)
Bedford: 87dB drive-by (equiv to 101dB static according to a quick surf of the web)
(standard race limit is 105dB at 0.5m, 45deg static, and that's what Cadwell use for trackdays too)
So, I think my 94dB-static scoob should be ok everywhere (have I missed any?).
Or ... should I hang onto that quiet backbox just to be sure to be sure?!
Andy
Circuit noise limits, how quiet?
I'm just having a quieter 3" system made at the moment for a very good price indeed, And the quality of their work is top notch so if you're thinking of getting a new exhaust made up why not try AAS in Newcastle.
I'm hoping to be around 85-90 DB even quieter is pos, I just left them with the brief of making it as quiet as pos.
Simpson are very expensive in my opinion, It's only a bit of bloody stainless pipe FFS
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Mine is getting done for
I'm hoping to be around 85-90 DB even quieter is pos, I just left them with the brief of making it as quiet as pos.
Simpson are very expensive in my opinion, It's only a bit of bloody stainless pipe FFS


Mine is getting done for