Yesterday i drove my S4 BiTurbo and wasn't feeling the normal power by acceleration....in first and second gear there was 100% power and from the 3rd gear there is missing power...one thing for sure the Turbo's are ok...
Anyone with suggestions?
Monday i'll get to the dealer to read the computer...
For myself i'm thinking...Airintake computer...or Waste Gate...or a leaking hose or EGR Valve?
The car is running normal no problems found so far, no oil leaking, no using of oil.
Suggestions?

 

Thanx for all the suggestions but its solved, i don't know the technical english term but it was a defect AirWeight?? computer (behind the airbox)
The dealer has installed a new one and its back on full power!!!
I'm glad the Turbo's are ok!!