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Decibels

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Vince Caldicott:
Last year I purchased COX5012  and changed the 428 FE for a 427 side oiler. I did attend the ACOC sprint in November but sadly was unable to participate due to the 105db limit imposed. The car I own has side pipes. My question is this, is there any way to reduce the noise emitted from my side pipes to a level which would comply? Somebody did suggest to me that I should do away with the side pipes and replace with a conventional exhaust with silencer but it is not an option that I like. Is there any exhaust specialist  out there that has solution?

minimans:
There's plenty of them here in the USA. Just google "Cobra side pipe silencer"
   http://www.carchemistry.com/cc-inserts-silencer-sound-comparison-cobra-side-pipe-application/
   You could also try angling the outlet down toward the ground?

Vince Caldicott:
Thanks for your input, has anyone tried these and what was the end result?

TLegate:
As I was riding shotgun in said vehicle on the journey to & from the circuit, I can testify that the 427 side-oiler is LOUD. (I look forward to my hearing returning to normal...) I hope your neighbours have finally forgiven you re the car alarms :)
   
   I think nothing short of a mattress up each pipe will solve the problem. Otherwise, buy up all the houses that back onto the circuit.

Robin A Woolmer:
Not Legal on the Road either!!

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