Update on rear bar.It does reduce the understeer slightly and there`s less body roll both of which are to be expected.But there`s an added bonus.
I thought the difference would have been more pronounced. The original OEM bar (at least on mine) has the rubber bushes bonded to the bar.There was no way I could remove them or even turn them on the bar and I tried really hard.This explains why the difference between the bars is not that great.The OEM bushes are adding to the roll stiffness.But the added bonus is that the new bar has bushes that will turn easily .So in situations where you have two wheels rising together (speed bumps) the ride is actually noticeably softer.
Have you tried hustling it down a twisty B road yet, much better turn in, less body roll and a load more confidence in placing the car for corners. I have a suspicion that the guys running MPSS tyres also may feel even more benefit. Not a bad mod for £185 and works well with the stock mag ride suspension.