Zero boost, no codes, no smoke... wtf!?

COTT5Series · 12-13-2016, 05:23 PM

I'm stumped. Tried searching three different forums and can't find anything specific.

Procede shows -4.8psi under load. Checked ic pipes and found no leaks or cracks. Discovered that the rear DV is leaking but that shouldn't cause a zero boost situation, should it? Driving the car it has absolutely no power and the soft rubber ic hose just before the charge pipe shown in the attached picture collapses under load, even just revving the engine.

Found oil in the intercooler, thought that maybe one of the turbos was blown but there's no smoke.

Car has procede rev3 v5, running the 9-10 aggressive E85 stage 1 map and dci.

New vanos, new hpfp, new lpfs, new plugs, new coils.

Worst part is that I am getting zero codes for anything. Idles around 650rpm and has a very slight stumble.

I'm stumped.

whyzee125 · 12-13-2016, 05:47 PM

If you already know the rear DV is leaking, that's a good place to start. I had a vacuum leak once resulting in a max boost of 5 psi on an 18psi tune and also had no codes or smoke. Plugged a vacuum line in that had fallen off and all was back to normal.

COTT5Series · 12-13-2016, 06:35 PM

I've traced pretty much all of the vacuum lines and nothing really seems to be off. I'm sure the zero boost is a wg/vac issue but what about this hose collapsing as soon as I hit the gas?

limitdown · 12-14-2016, 02:47 AM

My car never throws a code when I have a boost leak. A bit annoying.

Fix the DV and check/replace all boost and vacuum hoses.

Milan · 12-14-2016, 10:38 AM

I forgot to plug in one of my vacuum canisters once and my car wouldn't boost after that. Drove great though lol

Boland01 · 12-14-2016, 01:53 PM

With a JB4 if you set map 10 and 11 to zero it won't boost or boost minimally. Not sure if the proceed has those options or not. Another possibility is the boost solenoids.

COTT5Series · 12-15-2016, 03:22 PM

Quote:

Originally Posted by Boland01

With a JB4 if you set map 10 and 11 to zero it won't boost or boost minimally. Not sure if the proceed has those options or not. Another possibility is the boost solenoids.

How do I go about checking those?

Boland01 · 12-15-2016, 04:14 PM

Don't know about the Procede but on the JB4 you can access via the steering wheel controls.

12-13-2016, 05:23 PM	#1
COTT5Series New Member 2 Rep 11 Posts Drives: 08' 535xi Join Date: Sep 2016 Location: Colorado Springs iTrader: (0)	Zero boost, no codes, no smoke... wtf!? I'm stumped. Tried searching three different forums and can't find anything specific. Procede shows -4.8psi under load. Checked ic pipes and found no leaks or cracks. Discovered that the rear DV is leaking but that shouldn't cause a zero boost situation, should it? Driving the car it has absolutely no power and the soft rubber ic hose just before the charge pipe shown in the attached picture collapses under load, even just revving the engine. Found oil in the intercooler, thought that maybe one of the turbos was blown but there's no smoke. Car has procede rev3 v5, running the 9-10 aggressive E85 stage 1 map and dci. New vanos, new hpfp, new lpfs, new plugs, new coils. Worst part is that I am getting zero codes for anything. Idles around 650rpm and has a very slight stumble. I'm stumped. Attached Images
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12-13-2016, 05:47 PM	#2
whyzee125 Brigadier General 1679 Rep 3,645 Posts Drives: Dinan stage 2 335i Join Date: Jul 2014 Location: Chattanooga Tn iTrader: (0)	If you already know the rear DV is leaking, that's a good place to start. I had a vacuum leak once resulting in a max boost of 5 psi on an 18psi tune and also had no codes or smoke. Plugged a vacuum line in that had fallen off and all was back to normal.
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12-13-2016, 06:35 PM	#3
COTT5Series New Member 2 Rep 11 Posts Drives: 08' 535xi Join Date: Sep 2016 Location: Colorado Springs iTrader: (0)	I've traced pretty much all of the vacuum lines and nothing really seems to be off. I'm sure the zero boost is a wg/vac issue but what about this hose collapsing as soon as I hit the gas?
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12-14-2016, 02:47 AM	#4
limitdown First Lieutenant 187 Rep 337 Posts Drives: 2007 335i E93 Join Date: Jul 2015 Location: Location iTrader: (0)	My car never throws a code when I have a boost leak. A bit annoying. Fix the DV and check/replace all boost and vacuum hoses.
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12-14-2016, 10:38 AM	#5
Milan Captain 202 Rep 649 Posts Drives: F80 M3 Join Date: May 2014 Location: Boise, ID iTrader: (7)	I forgot to plug in one of my vacuum canisters once and my car wouldn't boost after that. Drove great though lol __________________ 17 M3 Comp
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12-14-2016, 01:53 PM	#6
Boland01 Lieutenant 149 Rep 460 Posts Drives: 2010 535ix, 2008, 2007 335i Join Date: Sep 2013 Location: Magnolia, TX iTrader: (0)	With a JB4 if you set map 10 and 11 to zero it won't boost or boost minimally. Not sure if the proceed has those options or not. Another possibility is the boost solenoids.
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12-15-2016, 04:14 PM	#8
Boland01 Lieutenant 149 Rep 460 Posts Drives: 2010 535ix, 2008, 2007 335i Join Date: Sep 2013 Location: Magnolia, TX iTrader: (0)	Don't know about the Procede but on the JB4 you can access via the steering wheel controls.
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