My theory is that they wouldn't have put it there if there wasn't a good reason. Obviously if the AFM self destructs then it stops big bits of plastic reaching the impellor. Likewise, it also stops bits of filter reaching the AFM. I reckon thats all its there for, a crude safety/protection device.
Its one of those things that you just don't really know how well its connected to the afm its self, i spoke to someone off sdu about this a month or two ago and he actually said it was a cheap mod to improve air flow!
Guess it would make a bit of a difference. Not sure I would be very comfortable removing it, certainly not the one on the turbo side. Would consider the filter side though as an AFM is cheaper than a turbo!
i remember reading somewhere that it is not a good idea to remove the gauze, it was possibly on the free horsepower thread on SDU, but a few top tuners were qouted as saying leave it well alone, just cant remember why....
have o look on SDU free horse power it may shed some light
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