ok so getting this code

turbo isnt kicking in low turbo boost

whats causes it any ideas lads

ceri

I recognise that.

MAF?

Does this help at all -

16683/P0299/000665 - Ross-Tech Wiki

Try unpluging the air mass meter rip it up the road you will probably find it will go better if itis a fault with the air mass meter as the ecu will use a preset map when it is disconnected see how you get on this should confirm your fault !

Try unpluging the air mass meter rip it up the road you will probably find it will go better if itis a fault with the air mass meter as the ecu will use a preset map when it is disconnected see how you get on this should confirm your fault !

Did you read the link Stu posted?

16683/P0299/000665 - Boost Pressure Regulation: Control Range Not Reached

Possible Causes

• Hoses/Pipes incorrect connected' date=' disconnected or leaking
  [*'] Charger Pressure Control defective
  

Surely this eradicates the possibility of it being the air mass meter?