Subject: Low Boost Pressure Reading Models: 911 Turbo ALL
Bulletin Number: 78 – 05
If boost pressure gauge reads low, especially at high ambient temperatures, boost gauge sending unit may not be properly vented.
- Remove boost pressure gauge sending unit
- Drill 1.0 mm (No. 60 drill) hole into metal of sending unit so that hole faces downward when sending unit is installed.
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