I am struggling to remove the last two nuts that hold the front flexi pipe on to the bottom of the catalyst.
I am a bit confused as to why the two studs that attach this pipe have a torx type head to them, am I supposed
to be undoing these to remove this pipe ? Or is it just the nuts are so rusted on that I cannot budge them.
I have tried WD40 & a blowtorch but all I seem to be achieving is to round the nuts

Has anyone got any tips as to how I can get this pipe removed from the bottom of the cat ?
Yours in hope,
Paul...