Lost acceleration and not boosting sometimes

i did but they said they,er not sure it thats the prob cuase its not coming up on there computer thats why i,m asking for help here,its going back in on tues cause its blowen the air flow sensor again and its on done 10 k on it so still under worrenty

Don't let " We're not sure", be an option! If they weren't sure why & how did they know to do what they did?! Demand it be repaired per your warranty & if they refuse, have the BBB & An Attorney on speed dial & call in front of them!

thanx man be much appre,i,m am also on my 3rd mechanic,its keeps stuffing my air flow sensor since iv had this prob,i think it lies around there somewhere,or so my mechanic says it could be a number of 60 things?,wat evere that means,i,ve got it booked in next tuesday so ill let yoiu know as well if we can get to the bottum of this,someone out there must has some exsperence around this,thanx for ur reply