May 14, 2008 路 Re: How to tell when your Diverter Valve fails. Originally Posted by ecbo0m. You can also test the DV manually by taking it out first. Push the piston down with a socket while covering the vacuum nib with your finger. Remove the socket, and the piston should stay in the up position until you remove your finger.
Feb 21, 2013 路 Most k04 tunes run on stock injectors @ 5 bar. Most f21 tunes use larger injectors. The tune specs will be listed or you can ask the tuner what the supporting mods you need are to run it. 98.5 Audi A4 1.8T Quattro | 5 Speed | AEB | Laser Red. Dec 4, 2004 路 A4 (B5 Platform) Discussion - Diff between N75 H and J valve. I have both. Which is supposed to be the more aggressive - At first I was under the impression that the H valve(ecs race valve) was more aggressive than the J valve. After running the J for some time I just put in the H today and it seems exactly the same, Dec 18, 2005 路 The pancake valve is designed to allow air pass through it. It does close when a certain amount of suctions applied, even while closed it has a hole in it to allow air to pass. The pancake valve could cause your boost problems if it wasn't closing but unlikely. Click on the link to read about the valve. rjkGbB. 390 214 340 84 399 53 465 175 425