BMW 525D EDC15C4 Turbo Boost delay help
xelios
06-13-2026, 11:20 AM
Hello everyone, this is my first post here and it might be against the rules, if it is i am sorry for that.
I bought used 2001 BMW 525D E39 and the owner told me that the only issue the car has is the delay in the turbo (the car is a monster after 2300rpm but before that the turbo doesnt really kick in, he said the turbo problem began when he got a tunning for stage 1) I got a kess clone and downloaded the file but I have no experience how to tune it. Can someone maybe just check whats wrong with the map and point me in some directions or fix it right ahead. Thanks!
https://drive.google.com/file/d/12X7ae_Zb6KHQYABqxpIpZKFFbA0qCX5U/view?usp=drive_link
this is the link to the ECU Read
I bought used 2001 BMW 525D E39 and the owner told me that the only issue the car has is the delay in the turbo (the car is a monster after 2300rpm but before that the turbo doesnt really kick in, he said the turbo problem began when he got a tunning for stage 1) I got a kess clone and downloaded the file but I have no experience how to tune it. Can someone maybe just check whats wrong with the map and point me in some directions or fix it right ahead. Thanks!
https://drive.google.com/file/d/12X7ae_Zb6KHQYABqxpIpZKFFbA0qCX5U/view?usp=drive_link
this is the link to the ECU Read
Automotive Network, Inc., Copyright ©2026