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BMW 3-Series (E90 E92) Forum
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Is there a way to check the effectiveness of the diverter valves ?
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| 12-14-2010, 08:08 AM | #1 |
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Is there a way to check the effectiveness of the diverter valves ?
Hi,
I am wondering, is there a way to check of the stock diverter valves are up to the job on my GIAC S2 flash ? I mean, my car runs perfectly but then, why do some people upgrade to Forge DVs ? How can I check if the diverter valves are working ok ? Is there something to log with the BT tool ? Is there a specific test to do ? |
| 12-14-2010, 08:29 AM | #2 |
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Drives: 2007 E93 Alpine white with Red
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Curious about this as well.
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 2007 335I E93 sport package Alpine White. BMS DCI, PROcede V4, ACT street clutch, Michelin Pilot Sport A/S Plus and BT Tool. Pending install of Raceland Downpipes. |
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| 12-14-2010, 09:21 AM | #3 |
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30ff code means they have popped out of their holes. There is a smoke leak test that Terry performed on n54. He showed that stockers held up to 25 psi if they are not damaged. If they are damaged, you sould be 1-2 psi short of your boost target on your logs.
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JB4 beta 15 ohms FSB,AEM inline filter/ CM 10, ETS fmic, ER custom made charge pipe,TSW Donnington 18's,Simitumo HTRZ3, Injen DCI, AR DPs, Forge DVs, AA SLD, Koni FSD, ZSP springs.
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| 12-14-2010, 09:29 AM | #4 |
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you are fine with the stockers as well.
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07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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| 12-14-2010, 03:21 PM | #5 |
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Try these
http://www.audiworld.com/tech/eng16.shtml http://www.vaglinks.com/Docs/Misc/VA...rter_Valve.pdf
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| 12-14-2010, 03:45 PM | #6 | |
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Quote:
It seems that boost spikes at shifting can be reduced using proper DVs. But of course, this remains to be tested...  |
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| 12-14-2010, 06:23 PM | #7 | |
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Quote:
boost spikes can be addressed with Jb3 throttle adjustment, not sure how its done on jb4. I have Hyperboost DV's and I love them. No diaphram to break so no wondering if my DVs are leaking, they can't as long as the backs are screwed on tight and the hoses are zip tied to the inlet, unlike Forge and the stockers which have the diaphram. I picked my upgrades up for $200.00. I wasn't sure how to service them so I had a little issue a few months back but I found a DIY on an Audi site and now I am good to go! The diaphrams make sure there are no tiny leaks but when the tear it can be hard to identify. I found them on-line as a dealership has been installing them with Dinan Stage 2 Tune upgrades. Hyperboost DVs sound amazing...like a blow off valve without the ricey whistling.
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JB4 beta 15 ohms FSB,AEM inline filter/ CM 10, ETS fmic, ER custom made charge pipe,TSW Donnington 18's,Simitumo HTRZ3, Injen DCI, AR DPs, Forge DVs, AA SLD, Koni FSD, ZSP springs.
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