Rover 214si

[procta]

Procta, you might know this.

What might be needed to convert a SPI K16 to MPI? Other than the obvious manifold, injectors, ecu and loom?

you going to have a right bother mind getting the bits to mpi this, due to the age.
With it been a wedge shaped rover ( old school)
the ecu,flywheel engine loom is different to the later R200 bubbles Which I would say there are more of them in the scrappies. 

If you can find a later Wedge one like yours, ( with the chrome grill) 
you will need 
manifold
black box
rocker cover
inlet, air box
ecu and alarm system ( not sure if the older ones are coded)
the engine loom
also a fuel pump too, as the mpi fuel pump is 1.5 bar or something more than the spi/
 
For the f*ck on you will have, sorting parts out I wouldn't even bother for what you will gain,
change the manifold on it to the mpi one and that will make it open it up. 

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another thing that can cause these to cut out is this bastard!