Had a full de-cat milltek system installed a couple of months ago, since then I have had a loud clicking.. rattling type sound. It’s most noticeable on cold start in the morning when it’s idling at around 2500rpm, when its settles it’s not so loud but it remains very apparent when accelerating.. I think at the same rpm. A mate works for Colbournes and loves his VR6's so knows a lot about them, he checked it over, exhaust seems fine and is air tight. He said its probably exhaust gas's that normally you don’t hear due to the original system being far thicker and deadening the sound. Has