The TCS light comes on and stays on when the MAF sensor is unplugged....
My remapped
Ibiza goes into limp mode if I run the car over 130mph for a prolonged period if time... I reckon that is due to overboosting and possibly the fault of the N249 I suppose... !?!
I don't tend to drive the car at that speed though (unless on a private road), so doesn't cause too many problems in daily use.
I have had it do the same to me when at normal speeds though, triggered by holding it in 2nd gear near the red line for longer than usual without changing gear (stuck behind someone coming out of a 40 zone into a 70 zone).