You guys are missing all the other points, points that are a benefit to the placement of that maf. The further away up the intake tract that the MAF is then the harder it is to tune for on/off throttle rich/lean conditions, etc.
You will get more rich/lean spikes from sudden changes in throttle application simply because of the length of the column of air between the maf and the cylinders. It also makes running a blow-off valve easy instead of having to tune around dumping metered air and having backfires and stalling.
The location of the maf in front of the TB is only a few inches from stock as well and if you have an intercooler before it that distributes the airflow evenly plus cools it, I can only see one or two negative points to a blow through as opposed to the single negative I mentioned above.
But, you are correct in that it is simply a piece of pipe anyway, intake routing can be your choice since it is the compressor and belt drive system that are the hard part.
That setup there kicks arse IMHO as a starting point.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
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'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
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