Firstly you need to swap the top half of the injector pump for the one from the original engine. The BMW electronics are not compatible with the Range Rover ECU and will not work. You could change pumps but you need special tools to remove it, hold sprocket in position for reassembly and time it. Fuel quantity servo pin MUST be engaged properly with fuel control collar or engine will not run. There have been recent threads detailing this, do a search. With pump top central on it's slots with bolts barely nipped crank engine. Tap pump top forwards or back until engine fires then tap further until it runs. Let engine warm then tap pump top back and forth to get 750 RPM. Tighten bolts fully. Engine will run quite happily without the manifold, just make sure nothing gets sucked in. If EKA has gone in and key works locks with no "Engine disabled" message, engine should crank, however it still won't start if ECM is out of sync with BECM. Check starter relay 16 and fuse 40.