9-3 Viggen Coupe (9400) L4-2.3L Turbo (B235) HO (1999)
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Turbo Boost Gauge: Adjustments
Adjusting The Turbo Pressure Gauge
Adjusting The Turbo Pressure Gauge
The turbo pressure gauge is divided into 4 fixed breakpoints, 2 of which are adjustable.
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Barometric pressure: breakpoint where the gauge needle is between the white and yellow zones (factory setting: 108 kPa).
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Maximum charge pressure: breakpoint where the gauge needle is between the yellow and red zones (factory settings: cars with automatic
transmission 171 kPa, cars with manual gearbox 189 kPa).
Adjustment is in steps of 3 kPa.
