Forge DV's Opening During WOT Run

JStang · 03-16-2015, 09:14 AM

I noticed yesterday that my Forge DV's are opening in the middle of a WOT pull and I'm not hitting full boost. Boost is only reaching about 12 PSI where I usually see 18+. Only codes are fuel mixture codes P29E0 and P29E1.

Thoughts?

CHECKERED · 03-16-2015, 10:46 AM

what color spring are you using in the DV?

JStang · 03-16-2015, 10:49 AM

Quote:

Originally Posted by CHECKERED

what color spring are you using in the DV?

Yellow. Have been using them since day 1 with no issues.

CHECKERED · 03-16-2015, 11:51 AM

Quote:

Originally Posted by JStang

Yellow. Have been using them since day 1 with no issues.

I think the springs are worn, uncommon, but not unheard of...

Jeff@TopGearSolutions · 03-16-2015, 12:36 PM

Quote:

Originally Posted by CHECKERED

I think the springs are worn, uncommon, but not unheard of...

If this is possible then he can theoretically try the blue spring to see if it fixes the issue or try adding a spacer first.

OP if you don't have spare springs Forge does sell them for about ~$20.

It's also worth cleaning the DV while you are there.

Dmacc · 03-16-2015, 12:51 PM

Before going down this road of investigating the Dv's, make sure you don't have any vacuum or boost leaks. After a month of tweaking my DV's I realized I had a leak somewhere else!

Good luck op

JStang · 03-16-2015, 02:12 PM

Quote:

Originally Posted by Jeff@TopGearSolutions

If this is possible then he can theoretically try the blue spring to see if it fixes the issue or try adding a spacer first.

OP if you don't have spare springs Forge does sell them for about ~$20.

It's also worth cleaning the DV while you are there.

I have the spare springs and will give this a shot. I cleaned them about a month ago.

Quote:

Originally Posted by Dmacc

Before going down this road of investigating the Dv's, make sure you don't have any vacuum or boost leaks. After a month of tweaking my DV's I realized I had a leak somewhere else!

Good luck op

Would a boost leak somewhere else cause the DV's to open prematurely?

CHECKERED · 03-16-2015, 02:38 PM

Quote:

Originally Posted by JStang

Would a boost leak somewhere else cause the DV's to open prematurely?

nope, but a vacuum leak would

ksalih · 03-16-2015, 06:28 PM

My guess would be a vac leak...Maybe a rebuild kit for the DV's too?

C.Pop · 03-16-2015, 07:03 PM

Do a log and make sure that throttle closure isn't causing the BOV to vent.

Dmacc · 03-16-2015, 07:49 PM

Quote:

Originally Posted by C.Pop

Do a log and make sure that throttle closure isn't causing the BOV to vent.

This is good info.

JStang · 03-17-2015, 08:18 AM

Excuse my laziness but I should have popped the hood prior to posting. One of the vacuum hoses going from the DV to the intake manifold had popped off of the DV.

It's never this easy which is why I posted here first. Thanks for all your help and suggestions.

CHECKERED · 03-17-2015, 11:09 AM

Quote:

Originally Posted by JStang

Excuse my laziness but I should have popped the hood prior to posting. One of the vacuum hoses going from the DV to the intake manifold had popped off of the DV.

It's never this easy which is why I posted here first. Thanks for all your help and suggestions.

haha...glad it was an easy fix

JStang · 03-17-2015, 11:50 AM

Quote:

Originally Posted by CHECKERED

haha...glad it was an easy fix

Jeff@TopGearSolutions · 03-17-2015, 11:59 AM

Quote:

Originally Posted by JStang

Excuse my laziness but I should have popped the hood prior to posting. One of the vacuum hoses going from the DV to the intake manifold had popped off of the DV.

It's never this easy which is why I posted here first. Thanks for all your help and suggestions.

Don't worry, many people post problem threads without popping the hood.

Most problems are typically very easy.

03-16-2015, 09:14 AM	#1
JStang Brigadier General 572 Rep 3,627 Posts Drives: FDB M3 CS Join Date: Dec 2010 Location: St. Petersburg, FL iTrader: (9)	Forge DV's Opening During WOT Run I noticed yesterday that my Forge DV's are opening in the middle of a WOT pull and I'm not hitting full boost. Boost is only reaching about 12 PSI where I usually see 18+. Only codes are fuel mixture codes P29E0 and P29E1. Thoughts?
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03-16-2015, 10:46 AM	#2
CHECKERED ex deus machina 128 Rep 968 Posts Drives: G30, F15, Audi S4 Join Date: Oct 2012 Location: Southern NH iTrader: (12)	what color spring are you using in the DV? __________________ Daily: G30 M550i, Bluestone, JB4, 1 step colder plugs, 6WB retrofit Winter Beast: Audi S4 4.2L V8, Supercharger, brakes, suspension & exhaust mods Wifes': F15 M50d clone, DUDMD tune, WMI, MPBK Gone: E92 335i N54 468rwtq
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03-16-2015, 12:51 PM	#6
Dmacc Colonel 208 Rep 2,799 Posts Drives: 2011 BMW 1M Join Date: Mar 2010 Location: So Cal iTrader: (1)	Before going down this road of investigating the Dv's, make sure you don't have any vacuum or boost leaks. After a month of tweaking my DV's I realized I had a leak somewhere else! Good luck op __________________ thanks to MGallop
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03-16-2015, 06:28 PM	#9
ksalih Lieutenant 72 Rep 511 Posts Drives: 2018 M2 LCI Join Date: Mar 2012 Location: Gilbert, AZ iTrader: (1)	My guess would be a vac leak...Maybe a rebuild kit for the DV's too? __________________ '2018 F87 M2 LCI \| LBB \| GC Camber Plates \| Ohlins R&T 90/190N/mm \| 18x10 et33 square 275/35 \| MPe \| Poly Transmission Mounts \| Recaro Sportster CS
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03-16-2015, 07:03 PM	#10
C.Pop First Lieutenant 65 Rep 385 Posts Drives: 335i Join Date: May 2013 Location: AZ iTrader: (0)	Do a log and make sure that throttle closure isn't causing the BOV to vent. __________________ 2007 E90, 6MT, VRSF 7" FMIC, RR DP's, Vargas Stage 2+ (19t unclipped), CP-e Charge Pipe/Tial BOV, BMS DCI, Fuel-it! Stg 2 LPFP, E66, 118k+ miles Brentuned
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03-17-2015, 08:18 AM	#12
JStang Brigadier General 572 Rep 3,627 Posts Drives: FDB M3 CS Join Date: Dec 2010 Location: St. Petersburg, FL iTrader: (9)	Excuse my laziness but I should have popped the hood prior to posting. One of the vacuum hoses going from the DV to the intake manifold had popped off of the DV. It's never this easy which is why I posted here first. Thanks for all your help and suggestions.
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