Bedford noise limits, SR3's

Bedford noise limits, SR3's

Author
Discussion

wioifoiee

Original Poster:

148 posts

188 months

Saturday 29th January 2022
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Can anyone here confirm if they have successfully run a SR3 at Bedford on a general track day without issues?
I have the RSX exhaust with two mufflers, one in the centre in engine bay and another one where the exhaust exits, sideways
Is that enough muffling or will it still be over 101db??

Maybe someone here has the same exhaust/car and can confirm what a static test reads at?

wannabe-racer

139 posts

74 months

Monday 31st January 2022
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Following - great question btw, Bedford barely allowed my Atom to play

TonyF

2,300 posts

283 months

Monday 31st January 2022
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I’ve run both an SR3 & an SR10 at Bedford and been very close.
Any issues, ask where the noise meters are and short shift in those areas and you will be fine.

wioifoiee

Original Poster:

148 posts

188 months

Tuesday 1st February 2022
quotequote all
I forgot that last year i took my road car to bedford for a test, and it reached 99db static.
i can do a back to back test on my drive with my phone, using the car as a baseline
i will report back soon.

JayK12

2,354 posts

209 months

Thursday 3rd February 2022
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Always handy to have one of these with you - https://www.advantage-motorsport.co.uk/decibel-dev...

On my RS which had a single can (not the quiet one either) - Re-packing it and popping in the decibel devil dropped it enough for me at Donnington.

wioifoiee

Original Poster:

148 posts

188 months

Friday 8th April 2022
quotequote all
TonyF said:
I’ve run both an SR3 & an SR10 at Bedford and been very close.
Any issues, ask where the noise meters are and short shift in those areas and you will be fine.
Did your SR3 have the long quiet silencer on it like mine does?
Any muffler mods to pass?

wioifoiee

Original Poster:

148 posts

188 months

Friday 8th April 2022
quotequote all
JayK12 said:
Always handy to have one of these with you - https://www.advantage-motorsport.co.uk/decibel-dev...

On my RS which had a single can (not the quiet one either) - Re-packing it and popping in the decibel devil dropped it enough for me at Donnington.
Where did you take the exhaust to be repacked?

JayK12

2,354 posts

209 months

Tuesday 12th April 2022
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wioifoiee said:
JayK12 said:
Always handy to have one of these with you - https://www.advantage-motorsport.co.uk/decibel-dev...

On my RS which had a single can (not the quiet one either) - Re-packing it and popping in the decibel devil dropped it enough for me at Donnington.
Where did you take the exhaust to be repacked?
Do it yourself. Get some packing from demon tweaks, drill out the rivets, repack and and pop the rivets back in. You really need a quiet silencer, would save you a lot of hassle.

wioifoiee

Original Poster:

148 posts

188 months

Tuesday 12th April 2022
quotequote all
JayK12 said:
Do it yourself. Get some packing from demon tweaks, drill out the rivets, repack and and pop the rivets back in. You really need a quiet silencer, would save you a lot of hassle.
if you're referring to the radical one, the car already has it.
didn't realise you could repack yourself, sounds like an easy job, cool i'll give it a go.

JayK12

2,354 posts

209 months

Wednesday 13th April 2022
quotequote all
wioifoiee said:
JayK12 said:
Do it yourself. Get some packing from demon tweaks, drill out the rivets, repack and and pop the rivets back in. You really need a quiet silencer, would save you a lot of hassle.
if you're referring to the radical one, the car already has it.
didn't realise you could repack yourself, sounds like an easy job, cool i'll give it a go.
Ah ok, when I sold this car it had the loud tube like back box, not the bigger oval quiet box. Trying to remember it had a lot of changes does it have an RSX exhaust system now?

wioifoiee

Original Poster:

148 posts

188 months

Sunday 10th September 2023
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well, this forum is dead and i'm bored.
so at the risk of no one seeing this....i can confirm that an SR3 with a 2021 engine/GDU and radical's quiet exhaust (2 silencers) + the 2nd silencer repacked with acoustafil, + a merlin racing muffler stuck on the end, gave me 93db static noise test at bedford autodrome. 93!
I was miles inside the limit. The test was done in a corner near the main reception building and there was no blustery wind or anything to rely on.
i also had Zero problems with driveby, i didn't have to short shift or cruise past the sound meters.

well worth it because it's a great place to play with the car with lots of fun corners.
also there was no noticeable drop in acceleration/performance at all.

when i was at oulton the car tested 102db, that was with standard radical muffler packing, and no extra merlin silencer. So those 2 things made quite a huge difference.

https://youtu.be/CCgPmescHqU


Edited by wioifoiee on Sunday 10th September 23:47