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From the Haynes:

All models with CIS (K-Jetronic) Infection (1976-79)
System pressure
Test value 4.5 to 5.2 bars
Adjusting value 4.7 to 4.9 bars
'Warm' control pressure 3.6 ± 0.2 bars (control pressure regulator fully actuated)
'Cold' control pressure 1.5 ± 0.2 bars at room temperature of 20°C (68°F)
Injection valve opening pressure 2.5 to 3.6 bars
CO setting
1976-78. except California 1.5 ± 0.5%
1976-78. California only maximum 0.7% measured ahead of the catalytic converter
1979. except California 0.5 to 1.0%
1979. California only 0.6 to 1.2% measured before catalytic converter with air pump and/or carbon canister disconnected and hoses plugged

All models with Lambda injection (1980 and Turbo)
System pressure (test value) 5.4 to 6.0 bar
CO setting (at idle) 0.5to 1% by volume
'Warm' control pressure 3.65 ± 0.20 bars with engine stopped (no vacuum)
'Cold' control pressure 2.2 ± 0.20 bars at room temperature of 20°C (68°F)
Injection valve opening pressure 2.7 to 3.8 bars
Idling speed 900 ± 50 rpm
Charge pressure controlled (full throttle enrichment) 2.9 ± 0.20 bars
Leak test Minimum pressure after 60 min 1.0 bar

Revisions for 1981-onward
Leak test
Minimum pressure after 10 minutes 2.0 bar
Minimum pressure after 20 minutes 1.7 bar
Fuel pump delivery rate 750 cc per 30 seconds
'Warm' control pressure 3.4 to 5.2 bar
'Cold' control pressure 2.2 ± 0.20 bar at 68°F (20°C)
Injection vaive opening pressure 2.5 to 3.6 bar
System pressure (test value) 4.5 to 5.2 bar