i'll take the dash vent.
shoot me a text 607-423-8398
2001 Audi TT 225 - DD mod list= http://www.cardomain.com/ride/3243695/2001-audi-tt
1990 Audi Coupe Quattro - Project G6 classified
This is copied from their website.
The stock diverter valve uses a rubber diaphragm to open and close this pathway. This type of design is prone to unwanted boost escape, honking noises, and surging during part throttle. The Bailey Motorsport DV30 diverter valve uses a high temperature composite piston instead of a rubber diaphragm, which reacts much faster and more predictably. These piston-type valves can handle up to 4 bar (~60 psi) of boost and have ~75% more flow capacity than the stock valve. By reacting faster, turbo compressor stalling and the resulting turbo lag are greatly reduced. Each and every valve is pressure-tested prior to leaving the manufacturing process. Highly recommended for all turbo engines utilizing the Bosch DV, they are a very easy 30 minute bolt-in with the included detailed instructions.Bailey Motorsport is famous for their strict quality control when manufacturing their products, which means that you, the user, is ensured of proper performance. A 996 Twin Turbo owner on Funcarsonline recently posted:"I really regret installing the Baileys....so late. The performance degradation with the stock diverter valves occured over such a long period of time that I didn't notice the difference. Wow. 8-9 mph faster at the end of the front straight today with the Baileys. Much better acceleration. I had to change all of my braking points. Even if your car isn't 'honking,' you should consider replacing the stock DVs." There are dozens of diverter valves now available for the turbo charged Porsches and Audis, yet none of them have the versatility, history, and reliability of the Bailey Motorsport diverter valves. Fix your problems once and for all with the Bailey Motorsport diverter valves.
Compatibility Notes: We have confirmed DV30 compatibility with the following vehicles. Please note which vehicle you have so we can include the correct installation hardware.:
1996 - 2005 Audi A4 1.8T
2000 - 2004 Audi TT 1.8T
2000 - 2002 Audi S4 2.7T (requires two valves)
2000 - 2004 Audi A6 2.7T (requires two valves)
2000 - 2003 Audi allroad 2.7T (requires two valves)
1999.5 - 2005 Volkswagen Jetta 1.8T
1999.5 - 2005 Volkswagen Golf/GTI 1.8T
1999.5 - 2004 Volkswagen New Beetle 1.8T
1998 - 2004 Volkswagen Passat 1.8T
1996 - 1998 Porsche 993 911TT (requires two valves)
1999 - 2004 Porsche 996 991TT (requires two valves)