Messing with Adaptation values can cause serious issues! Please do not attempt if you don’t know what you are doing. This info is for reference only and we will not take responsibility for any damage caused.
To perform the following adaptations (except idle) you need to use the Login function.
Enter 12233 as a Login code.
Misuse of some of the adaptations can lead to engine failure.
This is done at your own risk!
Note that the EGR setting is for off-road use only…
[01 – Engine]
[Login – 11]
Enter 12233 to activate special adaptations,
[Adaptation – 10]
Enter the “channel number” below to select each channel.
Put in the suggested value(s) in “new value”.
Observe the “test value” field to make sure the adaptation setting is acceptable.
Channel 1: injected quantity
Check the injected quantity at idle, engine warm and all power consuming devices turned off. Specification is 2.5 to 9 mg/h. To change the amount of injected fuel perceived by the ECU, go to adaptation channel 1. If you have driveability problems, you may want to increase it to 3-4 mg/h. For slightly improved throttle response, you may try to decrease the value.
Channel 2: idle speed
No login required
The stock adaptation value should be 32768 (corresponds to 903 rpm).
Increase or decrease this to change idle speed.
Channel 3: EGR
To decrease the EGR rate, increase the number to the highest possible value (typically 33768).
This will prevent/slow down the intake manifold clogging problem and reduce smoke. Though the MAF at idle is still within specifications (370 mg/h) do not use this adaptation on the road 🙂
Again, this EGR setting is for off-road use only !!!
Don’t mess with Adaptation values!
Channel 5: starting conditions
Though undocumented, this channel effects the injected quantity the ECU allows when starting. You may want to experiment with it as a temporary fix for bad-start problems
On some EDC-15 ECUs, this channel has a non-zero value in it like 190.
Yes, that’s the “speed limiter”. Don’t mess with it!
It can only be adjusted downward, and it’s one-way! You cannot increase the value, and if you decrease it, you’re stuck with it.
So unless you want to permanently decrease your car’s top speed, don’t mess with it!
Copied from the T4 forum.