Why won't my BMW 318i start after replacing the ignition?

Ignition firing order is 1-3-4-2.

Ignition firing order is 1-3-4-2.

could be a problem with the security chip in the key.

try to reconnect the battery

Switch on ignition.

Earth terminal 7 (I've no pic sorry) and hold for 3 seconds.
Switch ignition off
That should do it

I have the same car I had the same problem.If you have the correct battery for your car with the same problem you have a short or positive ground in your dash/electric fuel pump/fuse box also be carefull of how you take the key from the ignition and if they're old replace them.

no you can not

ignition is electronically controlled and cannot be adjusted. It is controlled by circuits in the Electronics Control Module.

Hello!

Sounds like a stuck ignition relay. 
Try tapping with something ******* the ignition switch when this happens, see if it helps.
If it does consider replacing the ignition switch.

Hope this helps!