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Sheesus, how hard was that ?? Only through discussions about the web to find these Y pipes are double walled, pipe inside pipe (so, I was not getting bigger pipes fitting L Series Y pipe on EA81). Inside pipes can burn out or rot just below flange at head, pipe inside rattles like buggery on acceleration, some cruise, some backing off, sometimes goes dead quiet. Went dead quiet after I fitted EA82M and then it came back.

This idea came to me. Tried one screw up top first on RHS, then LHS, then lower RHS. 5 cents a self drilling gal screw with 8mm hex head. Tookl mere minutes to do first and go for a drive with more screws in pocket, drill driver beside me.

Jonno's 20c fix

So the EA82 headers aren't as big as first thought?

externally yeah, maybe not internally. They must be bigger than MY standard as get another 10kph out the EA81 in 3rd -swapping catted EA81 for catted EA82 Y pipe