the glorious MAF!!!

[Say bye bye]

Does this thing has no end to the head ache it causes!! i replaced it (again) his time with a cheaper one from GSF, why buy borsch if borsch is the one that always F*KS up!? i put it in, and at 4000 revs the car would just hold back, wouldn't go above put my old one back in an its fine(ish), but throws up maf sensor fault in vagcom.
Question is, did they give me the part or was my sensor ok to start off with?

[Stu-1.8T]

They are a bit annoying. Mine is starting to play up again, when gently pulling away it cuts off the power for a second (it's not every time though, and seems worse when the engine is not up to full temperature)