Someone please help...
Every now and then The car looses boost when foot is planted but if you keep foot down it will recover and boost ok or if you let off and plant again it will boost ok.
I have checked and lubed wategate valve, arm and actuator pivot.
Checked hoses for splits.
Changed map sensor.
Changed throttle body (did have another fault code which suggested this and that code has now gone)
Code P0299 remains. Which from looking into says turbo low which is presumably picking up the low boost when it looses it.
I do not get eml light just the logged code.

Any ideas?

Many thanks