[matuuu]

Hi.
i recently bought Seat from auction.
Owner said there is made big work, oilpump, camshaft, timing belt etc..
But, the car throws sometimes Underboost fault code P0299
Changed N75, checked vacuum lines, wastegate moves correctly.. no boost leaks..
boost comes around 2000rpm and then moves good, but under 2000rpm there is no power.
I made some logs with vcds and also read ecu software.
Hope someone understand more than me and give me good hint what to check.

Also no limp, no check engine.

Interested also for original file

[pupu144]

low boost under 2k usually indicates boost leak - in your case it may be internal, from EGR valve. Or your turbo is not in healthy condition.

Also, that SW seems to be ancient. Latest is 9970 (post dieselgate, of course)