This was the only code stored on my 90 740T,

Website says a code 1-1-3 is "Fuel injectors"

The connectors are all tight and clean, the injectors are originals...Does the code mean to replace them all, or ?

Who has good rebuilt units?

 

TO answer your question in a non spam way, the code simply means there is an issue with the fuel injectors, the ECU is having to hold teh injectors open too long compared to normal or the current/load the ECU sees in the wiring running to them.
So a likely possibility is blocked injectors causing the ECU to increase duty cycle (time they are open) to too great a value and the ECU recording this issue.
I'd probably either buy new injectors or have yours cleaned.

Regards, Andrew.