Hey guys!

Got a problem with my turbo boost on track.
Normal driving gives no problem and I still get the basic 0.9bar but on track after 10mins my turbo boost only goes to 0.5bar.
The weird thing is, it appears when I use my 2nd gear more often. If I stay in 3rd and go smoother on the flat she has no problems. Also tracking in the rain gives no turbo leak as well...

Is this a problem due of the waste-gate? Maybe it could be related with another mechanical problem? Or an ECU problem?
Because otherwise I don't have a clue and sometimes a little air problem can lead to failing valves...

Thanks for the help!

 

heat soak, limp mode

 

So it can be a tube that takes false air in due heat? And so she goes into save mode...

 

Any mods to the car? Did you check DV's? Possible WG rod.

 

Seems there have been quite a few boost issues lately. It is most likely a
1. hardware issue (leaks)
2. Software issue
3. environmental issue, or
4. fuel
or some interaction from the above list.

 

Nope it's a basic 996TT with 420bhp. The only mod I got is the europipe stage 2(loud). But it only gives more sound.

Problem like a leak/temp heat seems the most fair answer I think.

With software problem, I should have the problem in the rain and while driving slower.
A fuel problem could be but yet again, the problem changes when I use the car on track only.

Thanks for your answers guys! I'll let you know. 2 more trackdays (Spa and Le Mans bugatti) upcoming so I can test it. Than she goes in for maintenance. Not enough time before vacation they said

I'll closely look at my temp water/oil gauges and stuff!!! But in former cases everything stayed normal.