Hi Mike... Followed Dave`s post by visiting your website. I am currently in the process of constructing what I hope to be a temporary exhaust system that will satisfy IVA inspection requirements. These are simply good construction techniques with good welding. 99db max and EU compiance of silencer cans. (ie E marked etc or compliance certification).
What I will end up with is a hotch potch of welded parts leading to two compliant motor bike cans. The tig welding will be done by a friend but our issue is an inability to bend stainless pipe. (This has been a real learning curve as I didn`t realise the difficulty in bending stainless pipe correctly).
The db bit is not as straight forward as I thought it would be. There is a deal of noise from a aircooled engine hanging at the end of a buggy all affecting the amount of noise detectable at the specified distance from can outlet.
Hopefully, when I know that I have a compliant system and can take the trip to see you, we can come up with something that doesn`t have a multitude of tig welds. On a last note good luck with your business the photo`s are impressive.

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