i think the turbo is working but in limp mode... so its hardly boosting. if the turbo was damaged id imagine you`d hear it and youd have smoke from the exhaust.
have you checked coolant level? im suprised theres nothing on vagcom... im guessing youve checked all the hoses are secure?
if you unplugged the maf and the problem remained i doubt its that.
temp sensor?
... i doubt reving the engine with vagcom would show a faulty maf. you need to do a full run in to see what values the maf is showing. they tend to under read as they begin to die.
have you checked coolant level? im suprised theres nothing on vagcom... im guessing youve checked all the hoses are secure?
if you unplugged the maf and the problem remained i doubt its that.
temp sensor?
... i doubt reving the engine with vagcom would show a faulty maf. you need to do a full run in to see what values the maf is showing. they tend to under read as they begin to die.