73 mercedes 450sl

what makes the multi-fuel injection match the points of the firing order to multi-fuel injection. what controls it. are they relays? or are they capacitors? or both? If so where are they located. please help, thanks for your
time.
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The early V8 EFI did not inject with the firing order, per se. There are four sets of trigger points in the base of the distributor that send a signal to the ECU to fire off the injectors in pairs. 1 + 5, 2 + 7, 3 + 6, 4 + 8. With the distributor stabbed correctly and firing #1 plug at the index point, each cylinder gets 1/2 its gas charge on each revolution of the crank. The second half of the fuel charge comes just before the intake opens. [the crank makes 2 revolutions for each intake valve opening]

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enjoyed reading this now that's a knowledge based answer thank u

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