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The system is adaptive to the way you drive. It may need to learn that you like more boost.
Trionic Boost Adaptation
Background
On all Trionic versions including T5, T7 and T8 maximum turbo boost pressure is
continuously adapted and optimized during normal driving. There are times when it is
desirable to force the Trionic to adapt more rapidly by carrying out the procedure
explained below. It is recommended to perform this adaptation after replacement of the
Trionic control module (ECM) be it original or upgraded.
Note: It is important that the engine is at normal operating temperature
and the basic boost pressure is within factory specifications before
adaptation is performed. See relative method for checking and adjusting
base boost first. Remember to always use quality high-octane fuel
(Recommended min. 91). Obey all local laws when on public roads.
Method
There are two methods depending on gearbox type.
• Manual Gearbox
The adaptation range is from 2000 rpm up to 3500 rpm. The minimum time needed
in this range is 3 seconds. Select the highest gear possible. It is easiest to perform
this on a long hill. Repeat this until maximum boost pressure is attained. Maximum
boost will vary with regards to fuel quality, ECM variant and ambient temperature.
• Automatic Gearbox
Accelerate uphill with the maximum throttle possible without the kick down function
being used. The range is from 3000 up to 4500 rpm. Time spent in this rpm range
should be more than three seconds. Repeat this procedure until maximum
performance is attained. Maximum boost will vary with regards to fuel quality, ECM
variant and ambient temperature.
Note: If over-boost fuel cutoff is experienced repeatedly due to
excessive turbo pressure, negative boost pressure adaptation will occur.
This can be caused by other faults. After correcting the fault to
restore maximum boost, disconnect power to the control module and follow
the appropriate adaptation method again.
To force adaptation power can be disconnected from the Trionic unit by
removing and refitting Fuse 28 on 9-3 or Fuse 17 for 9-5 with the key
off.
posted by 199.94.1...
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