Delete

[Dum-Dum]

I have a hdi dturbo and if I give that some stick on a long tight bend I can feel the back end stepping out

If you mean give it some stick as in give it some throttle then you have suspension/tyre issues as it should understeer under these circumstances.

I just get lift off oversteer and a lot of it but then again my hdi is really low

I've heard lowering does exaggerate it

No your both wrong, lowering helps cure it as the lift off oversteer is caused by the weight transfer back to front causing the rear suspension to lift and the trailing arms to turn and also turn in (because of the passive rear wheel steering) and this causes the back end to step out.

Less suspension travel and stiffer dampers mean that when you lift off the suspension doesn't travel as far so the rear arms don't steer so much so it wont oversteer so much