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My 944, 1984
My 924S, 1987
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944 Specifications/Data
A/C  R134a Retrofitting
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DME-ML1.2 Early 944
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HFM5 Conversion Archive
Idle 1982/1985
Idle 1985.5/1989  ICV Reset
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Option Code - 007
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Remote Starter
The Rubber Band Broke
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944 Shudder Code Fix-ML1.2
944 Shudder Code Fix-ML3.1
Speedometer Calibration
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UniTester - BOSCH DMEs
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www.motronic.ws/fqs.htm

Firing Order

Porsche 944 Firing order

1-3-4-2

All 4 fuel injectors fire at one time. 
They fire once every crank rotation.
They fire twice every cam rotation.

 

 

The 944 wiring diagram does show the injectors are tied in pairs.  Two DME pins are used.   What you do not see is the pins are connected inside the DME.   So all injectors fire as once.

 

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