Re: 156 2.5 V6 power problem!
It could be the MAF sensor mate, these cost about £150 or so I believe.
Don't ask me what the MAF does though or where it is located, I have no idea, lol.
I have just read alot of threads regarding this problem and more often than not it is the MAF.
I could be wrong though and am sure someone will soon correct me if this is the case, lol.
Jason156 had his changed recently so if he spots this hopefully he can give you more insight.
Good luck mate and welcome to the forum,