VDJ79 Lack of Power on Heavy Acceleration

[dbishy]

Wondering if someone may have the same problem, I have a 2008 VDJ79 Landcruiser ute and it is a bit down on power. Boost lines are all good, especially on the back of the intercooler. If I drive the car calmly it behaves normally maybe with a little bit of rev and boost hesitation between gear changes or take off. But If i boot my foot down quickly regardless of being in gear driving or in neutral parked up the car hesitates for a second and then starts to rev up but won't go over 2800rpm or 6-7 psi boost. Driving normally or soft acceleration will allow it to go full rpm and 12-14 psi of boost. If anyone has any ideas please let me know as the mechanics cannot fault the car 

[trentmeyer23]

Has the EGR and intake been cleaned? It may be coked up and choking it.

[campbeam]

I was thinking a fuel supply issue like a clogged up fuel filter.

[dbishy]

Intake has not been cleaned as far as I'm aware, and it was serviced about 1000 km ago. So fuel filter is new. If it was choking that would make me think it would do it all the time? regardless of heavy or soft acceleration?