Anyone here had it and if so how do you find it?

Sometimes leaving well enough alone is good.

Yes

More power, more torque, less lag, better fuel economy. No reliability issues in the 18 months we kept it

Win Win

More torque ? what about gearbox max torque limit ?

As far as I know, (for auto gearbox) the max torque is ~ 430 nm and this is why the TD4 and SD4 engines have same torque (420 NM) despite 50 HP difference.

Was your an FL2 auto ?

Manual

Remapped by Alive Tuning, who know a thing or 2 about making Land Rovers go faster. As said, 18 months without issue, sold on at 136k miles