Adaptation of Boost Pressure

Adaptation of maximum boost pressure is carried out continuously during normal driving. If the Trionic control module is removed or anything else is done which affects the adaptation level, it is possible to speed up adaptation and so attain maximum performance faster by carrying out adaptation of the system as described below.

IMPORTANT: The engine should be thoroughly warmed up. Basic boost pressure should be correctly adjusted. Use fuel of good quality and a high octane rating.

Cars With A Manual Gearbox
Accelerate at wide open throttle in as high a gear as possible from about 2000 rpm up to 3500 rpm. Since the minimum time for passing the adaptation range (2750-3250 rpm) should be longer than 3 seconds, it is best to carry out adaptation on an uphill gradient. Repeat the procedure until maximum nominal boost pressure in regard to the fuel grade used, etc. is attained.

Cars With Automatic Transmission
Accelerate at as wide a throttle opening as possible without activating the kick-down function, from about 3000 rpm up to 4500 rpm. Since the minimum time for passing the adaptation range (3750-4250 rpm) should be longer than 3 seconds, it is best to carry out adaptation on an uphill gradient.
Repeat the procedure until maximum nominal boost pressure in regard to the fuel grade used, etc. is attained.

IMPORTANT: If the pressure switch opens repeatedly because boost pressure is too high (due to a defective boost pressure control valve, for instance), maximum negative adaptation will be obtained. As a result, maximum boost pressure will not attain its normal level. To restore maximum boost pressure to its normal level, disconnect and reconnect the control module and carry out adaptation as described above.