The general consensus here is that these diesels do not benefit from these 'performance' intake kits, and in fact, can be damaged by them.

Restriction issue.. Diesels, by their nature, breathe more air than they need for combustion, unlike gasoline engines which must maintain air/fuel ratio. The restriction in our engines is providing enough fuel for the air provided. Your turbo has the ability to move enough boost air to destroy your engine, you just don't have the fuel to make use of it. Air restriction isn't a problem, since you already have more than you need.

Filtration issue.. Those filters do not filter as well as a stock-type filter. Particles and whatnot getting into your turbo is a Bad Thing (TM), and not worth it. Even if there WAS a performance benefit to the intake kit (and I'm not saying there is), it probably wouldn't be worth the increased wear on the turbo blades.

There is another issue relating to the oil separator that I don't understand as well, I'll let someone else talk about that.

Basically, the best thing you can do for your intake is to keep it clean, keep the mounts refreshed, and keep your filters new.

peace,
sam

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"That f***in' biodiesel is makin' me hungry."

1982 300TD Astral Silver w/ 250k (BIO BNZ)
2001 Aprilia SR50 Corsa Red w/ 5.5k (>100 MPG)