Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 119
DME 7.8 DME 7.8 0 · Required fuel
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DME 7.8 DME 7.8 0
Required fuel
Fuel quality (RON) 98 unleaded
Electrical system
Nominal voltage V 12
Battery capacity Ah 80
Generator output W 1,680 (three-phase generator)
Ignition DME with stationary high-voltage distribution and
cylinder-selective knock control
Firing order 1 - 6 - 2 - 4 - 3 - 5
Ignition angle control Via DME
Spark plugs Bosch FR5 LDC
Beru 14 FR 5 LDU
Electrode gap mm 1.6 +/- 0.2
Load values of the 911 Turbo (996)
Mass air flow ML in kg/h CLV in %
Idle speed 16 - 20 1.45 - 1.82
No load, n=3,000 rpm 60 - 80 5.45 - 7.27
CLV = ML/MLMAX * 100, with MLMAX = 1100 kg/h
Test conditions
♦Engine temperature higher than 90 °C
♦Ambient temperature 20 °C
♦No loads switched on
Engine specifications 0-5 page 3
Printed in Germany – 8, 2002 msp_dm78
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