Having seen first hand some of the work from other Td5 tuning companies and also the resultant failures of clutches and head gaskets then some pre remap work would be beneficial. For my money I don't like the way Alive tuning remaps operate on the cars I have driven, delayed boost then a massive hit of torque which is all a placebo of a power increase, a good remap should be smooth and predicatable not with big spikes of power.
If it were my car I would fit a new headgasket with steel dowels not the plastic LR ones.
Have all the injectors checked and or replaced (its a big outlay if all are faulty but cheaper than a new engine, plus any tuning work is a waste of money if the injectors are not 100%, its a more common fault than people realise). Also check the injector loom for oil ingress.
Fit a new water pump, thermostat and if in any doubt a new radiator as well.
After that, work from the bottom up, silicon hoses, intercooler, then a vari van turbo if you want. Then remap.
Speak to Pete Bell at Bell Auto Services, you wont be disappointed IMO.
