Lost all Boost

Thekid33 · 06-01-2015, 02:58 PM

I installed the VTT2+ and inlets a few days ago. I'm in the process of getting them protuned but saturday night I noticed my car wasn't moving too quickly. I took a couple logs since then and it appears I'm not getting any boost. I have checked the FMIC/CP/TB piping. I lifted the car and it appears the inlets are still clamped. I know that vacuum leaks are prominent but would a leak cause 0 boost? Any idea where I should look next, thanks guys.

http://datazap.me/u/brandon/no-boost...og=0&data=2-17
http://datazap.me/u/brandon/no-boost...og=0&data=2-16

n54gte · 06-01-2015, 02:59 PM

do you have a jb4?

Thekid33 · 06-01-2015, 03:01 PM

No, I'm FBO with N20 sensor/stage 2 lpfp. I'm Cobb only. There are also no codes being thrown.

msjt · 06-01-2015, 03:02 PM

Yes, i had zero boost when the vacuum line to the wastegate actuator was loose.

glachhman2 · 06-01-2015, 03:03 PM

maybe the turbos fell off the car

msjt · 06-01-2015, 03:05 PM

Quote:

Originally Posted by glachhman2

maybe the turbos fell off the car

Definitely a possibility. Happened to him once.

glachhman2 · 06-01-2015, 03:06 PM

Quote:

Originally Posted by msjt

Yes, i had zero boost when the vacuum line to the wastegate actuator was loose.

no one cares

gabylonfive · 06-01-2015, 05:25 PM

check your vacuum lines - especially the two running on top of the valve cover as those are prone to failure more often than the rest of them.

replace with 3.5mm ID high-temp silicone or comparable hose and have some vacuum Ts handy in case you snap one.

SHEEDI · 06-01-2015, 06:12 PM

Quote:

Originally Posted by gabylonfive

check your vacuum lines - especially the two running on top of the valve cover as those are prone to failure more often than the rest of them.

replace with 3.5mm ID high-temp silicone or comparable hose and have some vacuum Ts handy in case you snap one.

would doing smoke test help OP to find any leaks?

06-01-2015, 02:58 PM	#1
Thekid33 New Member 3 Rep 23 Posts Drives: 2007 BMW 335i Join Date: Sep 2014 Location: Tucson iTrader: (0)	Lost all Boost I installed the VTT2+ and inlets a few days ago. I'm in the process of getting them protuned but saturday night I noticed my car wasn't moving too quickly. I took a couple logs since then and it appears I'm not getting any boost. I have checked the FMIC/CP/TB piping. I lifted the car and it appears the inlets are still clamped. I know that vacuum leaks are prominent but would a leak cause 0 boost? Any idea where I should look next, thanks guys. http://datazap.me/u/brandon/no-boost...og=0&data=2-17 http://datazap.me/u/brandon/no-boost...og=0&data=2-16
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06-01-2015, 03:01 PM	#3
Thekid33 New Member 3 Rep 23 Posts Drives: 2007 BMW 335i Join Date: Sep 2014 Location: Tucson iTrader: (0)	No, I'm FBO with N20 sensor/stage 2 lpfp. I'm Cobb only. There are also no codes being thrown.
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06-01-2015, 03:02 PM	#4
msjt First Lieutenant 160 Rep 305 Posts Drives: e92 335i Join Date: Jan 2013 Location: queens, nyc iTrader: (0)	Yes, i had zero boost when the vacuum line to the wastegate actuator was loose.
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06-01-2015, 03:03 PM	#5
glachhman2 Banned 45 Rep 303 Posts Drives: 2007 335i Join Date: Mar 2015 Location: Queens, NY iTrader: (0)	maybe the turbos fell off the car
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06-01-2015, 05:25 PM	#8
gabylonfive First Lieutenant 52 Rep 335 Posts Drives: 04 M3, 05 Elise Join Date: Oct 2013 Location: Bay Area, CA iTrader: (3)	check your vacuum lines - especially the two running on top of the valve cover as those are prone to failure more often than the rest of them. replace with 3.5mm ID high-temp silicone or comparable hose and have some vacuum Ts handy in case you snap one.
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