Not full boost when warm!

[Henka]

My car doesn't really deliver full boost when it gets warm. Alot more dump noise and a much bigger punch trhough every gear when cold. Even my girlfriend noticed it today. I'm guessing a temp sensor - but which? How do I check that? I'm thinking I might not get a fault code reading if the car isn't running - havent checked that yet, thought I'd check with you guys first...

[Efini]

Old thread, but does anyone have any input on this?
Seems I have the same problem, when the temp reaches 70 the boost seems to be limited. A steady 1.6bar at temps under 70, but as the temp rises the boost gets limited to 1.1bar..

[elijahallens2]

Check you pop off valve. I might have the same problem and have replace all the sensors but it still does it.

ELijah