i have the splitter on my b5 a4 and love it,
the thing i like about the splitter is that you can make it fully recirculating, fully blow off, or you can also make it recirculate 90% back in the system and then blow off 10% ...
01' A4 1.8T Quattro 5-Speed. Labree HFC, 2.5" piping to a Magnaflow muffler, K&N pannel filter, swiss cheese mod, ebay ss, Forge Splitter DV, Speedtuning Stg.2, VDO Boost Gauge, neuspeed racing springs, KONI Adj. shocks, clear corner mod, and debadged trunk