I decatted the 106 on Saturday, having had the cat back on for the MOT.
Noticed when I bolted it all back up that the gasket between the downpipe and decat didn't seem that clever.
Anyway... it was blowing again from that joint yesterday, so I stripped it back down and went off to get myself a new gasket for said joint today.
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Guess which one is the new gasket. ;-)-- JackH