To remove the turbocharger, start by disconnecting the battery negative lead and draining the cooling system. Next, undo the securing screws to remove the engine cover panel and unbolt the heat shield from the top of the turbocharger unit. Disconnect the vacuum hoses from the turbocharger control valve, noting their order for reassembly, then detach the valve from the air cleaner and remove the entire air cleaner assembly. Slacken the hose clips to disconnect the inlet and outlet air ducts from the turbocharger, then remove the heat shield from the engine compartment bulkhead. Undo the coolant supply and return pipe unions and the oil supply pipe union from the turbocharger housing, recovering the sealing washers. Jack up the front of the car and support it on axle stands, then remove the splash shield from the underside of the engine compartment. Remove the clamp bracket securing the oil return pipe and undo the oil supply pipe union at the engine block, being prepared for some oil spillage while recovering the union sealing washers. Delay extracting the oil return pipe from the engine block until the turbocharger is removed. Next, undo the four nuts securing the exhaust front pipe to the turbocharger, pull the front pipe down to separate the joint, and recover the gasket. Disconnect the turbocharger control valve vacuum hoses, noting their order for reassembly, then undo the nuts securing the turbocharger to the exhaust manifold and withdraw the turbocharger from the exhaust manifold, carefully extracting the oil return pipe from the engine block. Finally, remove the turbocharger from the car and recover the gaskets. For refitting, reverse the removal steps while ensuring to return any removed studs with their nuts to their original locations, applying thread-locking fluid to their cleaned threads. Clean the turbocharger and manifold mating faces thoroughly before using a new manifold gasket and new seals on all disturbed unions. Before refitting the oil supply pipe to the engine, undo the adjacent water pipe union to gain better access, then reconnect and tighten the water pipe union to the specified torque upon completion. Ensure all nuts and bolts are tightened to the correct torque where specified, refill the cooling system, and check the engine oil level, topping up if necessary.