Engine Control
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
| Designation |
997 Turbo (MA.170) |
997 Turbo S (MA.170 S) |
| Valve lift of inlet |
Large lift: 10.5 mm |
| Small lift: 3.6 mm |
| Valve lift of outlet |
10.35 mm |
| Camshaft |
Camshafts driven directly by the crankshaft via one 8-mm duplex bush chain drive per cylinder bank |
| Camshaft adjustment |
Porsche VarioCam Plus with continuous 40° adjustment |
| Valve clearance |
Hydraulic valve-clearance compensation |
| Timing: Inlet opens, large lift |
17.6° after TDC |
17.6° after TDC |
| Timing: inlet closes, large lift |
55.3° after BDC |
55.3° after BDC |
| Timing: inlet opens, small lift |
38.5° after TDC |
38.5° after TDC |
| Timing: inlet closes, small lift |
18.7° before BDC |
18.7° before BDC |
| Timing: outlet opens |
38.3° before BDC |
38.3° before BDC |
| Timing: Outlet closes |
6.3° before TDC |
6.3° before TDC |
| Engine control unit |
Siemens SDI 3.1 |
| Ignition |
DME, individual ignition modules, knock control |
| Firing order |
1-6-2-4-3-5 |
| Spark plugs |
Bosch FR6 NPP 332 S |
| Electrode gap |
0.7 + 0.1 mm |
| Electronic throttle |
Electronic throttle actuator control via DME |
| USA LEV II version |
On-Board Diagnosis II (OBDII)/LEV II |
| Euro 4 |
Euro-On Board Diagnosis (EOBD) |
| Euro 5 |
Euro-On Board Diagnosis (EOBD) |