Still trying to find
Join Date: Jun 2011
Location: United Kingdom
Matt, I have that same metallic rattle at 2200rpm, mine is a TS tho, but I've been trying to find the nojse for ages, first I thought the manifold was cracked, swapped that, then did the manifold gasket, not that either, checked every bracket and heat sheild, then I thought it was pinking/ pre-detonation, then changed to 95RON.
But during the week I was under the car and found the exhaust gasket, pre-cat had loads of carbon leaks, but it was a new aftermarket aluminium mesh style gasket which I found out that is prone to leaking and rattling, they aren't the best sealing gaskets though, so im gonna put a genuine metal gasket in.
I said this because you said you had previous exhaust work done, same as me, but I did mine myself. Remember, if theres a noise or a issue, the first thing I would look at is the work done previously on the car. 9/10 its something related to previous work carried out.