Well failing my cat-less test this arvo, it will be going into autotech next monday for pressurised smoke through the intake test to find any leaks...and if I haven't tried dropping the cat yet, they'll also chuck her on the dyno for a run with only the dump pipe.
If it's the cat, I don't give a shit lol. Just means I gotta drive it a bit softer for a while til i replace it like I've been meaning to
And after speaking to Stao (Hypergear), he's assured me how unlikely it is for anything to go wrong with the turbo to cause this, short of damaging the wheels themselves - which is amazingly unlikely too. helps for peace of mind, love that guy's customer service.