The general consensus is it's crap, and over priced crap at that. Does not filter as well as stock, and intakes hot air from behind the radiator

That being said I use something similar on my Turbo 240D, but I made it from parts at the auto parts store for much less.

__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine