karlosR said:yeah i know that they don't work but there have been threads where people have fitted the GFB valve and said it worked on un-chipped cars because its half atmos and half re-circ. then there have been threads where people have asked about atmos valves (like this one for example) and the word "chav" and "RST" pop up. me personally i like the sound as i've said earlier but i'm no chav.
at this point i'd like to point out that i'm not saying that anybody has called me a chav and i'm not having a pop at anybody either............................... oh god i'm tired, time for bed!
Whether it's chav or I don't know, however I do know the following is correct
Your car is designed to work with a re-circ DV (that's 100% not 50%) on a standard ECU you are asking for trouble if you use anything else. The danger is that atmospheric DV's cause your engine to run rich intially then lean

There has been talk recently about an HKS DV when coupled with modifications not causing any issues to yor car.......however the jury is still out on this one.......no proof either way.......the car it was being tested on was extensively modified