Well I fitted the Autodelta supplied Green Cotton Filter yesterday and to be fair the only difference I have noticed is the very slight induction whoosh, I am sure there is a slight performance gain though as compared to the filter I removed it appears to be less restrictive.
Whilst taking apart the intake etc I had a good look around to see how Jano's comments apply to why the MAF fails on the V6 more than other models and to be honest I am none the wiser. All I can conclude is that access to the box and pipes is rubbish, it's ridiculous that you have to remove the upper intake hoses to get to the top of the airbox properly and it's little wonder that so many of the top section flexi hoses fail / split. My theory is that the intake may actually be ok and the reason for premature MAF failure may be that the box and hoses aren't always put back together properly. For example where the bottom of the airbox inlet joins to the primary intake pipe that routes up to the back of the headlight, this needs to be seated correctly and can be a ***** to level up. On taking out my old Filter (which actually looks quite new) and putting it side by side the Green Cotton filter I noticed that the GC filter is very slightly longer, it also has a greater internal diameter and in order to make it fit I had to remove the trumpet that sat inside the old filter (this didn't really fit the GC filter anyway), once I had put the top of the airbox back on I removed the MAF to check that the new filter was seated ok, it was but it was also very slightly squashed on one side so it doesn't fit flush??? Bit strange, but will check it again to make sure it doesn't collapse as this filter isn't metal mesh re-inforced like the old one.