[JMatthias]

I have searched and searched but nothing comes up...when you uninstall the factory exhaust, did you remove the donut flange gaskets just after the catalytic converters? I know the Corsa kit comes with new gaskets but these seemed to fit real snug on the little lip of pipe.

 

[WI Hocky]

I took off all of the old when I did mine, no issues after 5 years
Still enjoy the sound

 

[JMatthias]

So I took the old donut gaskets off of the pipes and they actually fit inside the Corsa gaskets. The Corsa gasket actually fit around the donut flange from the factory exhaust. I did call Corsa and the technical guy there said to take them off so either way you go I don?t think it matters.