Vacuum issues N54 2007 335i

RU QWKR · 03-06-2015, 10:22 PM

Just bought and installed new VRSF charge pipe and Tial BOV. BOV wasnt opening so checked vacuum and at idle I am pulling 10 in/hg and at rev 14 in/hg. Replaced vacuum lines at throttle body and 2 that run over the oil filter housing. Can any of you point me in a direction to look where my vacuum is escaping. Also 2 other points, my car is not throwing any codes and I am at altitude 5600 feet. Much appreciated for the help

EvlShiftrE92 · 03-06-2015, 11:50 PM

Check the ones where the two canister are at right by motor good luck

The lines run down also as u can see mine needs to be replaced =P

Levanime · 03-07-2015, 03:21 AM

are you sure BOV is working fine?

it should be opening some.. IMO

RU QWKR · 03-07-2015, 09:31 AM

The BOV could be an issue IMO but trying to rule out where some common leaks are to go hunting as everyone is telling me even at altitude I shouldnt be half of the vacuum that most cars run at. Thanks for the reply and input as it looks like I will be digging around the passenger side of the car a bit today

fmonteiro444 · 03-07-2015, 09:38 AM

Quote:

Originally Posted by RU QWKR

The BOV could be an issue IMO but trying to rule out where some common leaks are to go hunting as everyone is telling me even at altitude I shouldnt be half of the vacuum that most cars run at. Thanks for the reply and input as it looks like I will be digging around the passenger side of the car a bit today

Replace all vacuum lines. It's not that hard and it's worthwhile to do. The other issue could be your boost solenoids.

RU QWKR · 03-07-2015, 09:46 AM

fmonteiro444, great info and it will point me in the right direction to find out where this PITA leak is. Thanks for the input, it is much appreciated

RU QWKR · 03-08-2015, 05:09 PM

fmonteiro444, do I need to go factory vacuum lines for the ones that go back to the wastegates (with the sheathing) or did you replace with some loom on them. Found multiple little leaks on these old vacuum lines and a big one on the brake booster (elbow) on the firewall. My hopes are getting it all done next weekend and wanted to buy enough parts up front. Thanks again for your input.

RU QWKR · 03-08-2015, 05:15 PM

EvlShiftrE92.....Thanks for the pics....Mine was also shot, lol.

fmonteiro444 · 03-10-2015, 02:03 PM

Quote:

Originally Posted by RU QWKR

fmonteiro444, do I need to go factory vacuum lines for the ones that go back to the wastegates (with the sheathing) or did you replace with some loom on them. Found multiple little leaks on these old vacuum lines and a big one on the brake booster (elbow) on the firewall. My hopes are getting it all done next weekend and wanted to buy enough parts up front. Thanks again for your input.

I ordered mine from ECS. I just did all silicon.

RU QWKR · 03-19-2015, 08:11 PM

All fixed and running like a top. Had to get a different spring in the BOV because I am at altitude, but all is well. Thanks for the help.

ferocity02 · 03-19-2015, 10:18 PM

We're you able to get more vaccuum? Or did you just replace the spring?

I had to use a 10psi spring in mine because it wouldn't open fast enough with the 10psi spring. Buy I'm at sea level.

03-06-2015, 10:22 PM	#1
RU QWKR New Member 2 Rep 27 Posts Drives: 2013 Frozen Blue M3 Join Date: Aug 2011 Location: Denver Co iTrader: (0)	Vacuum issues N54 2007 335i Just bought and installed new VRSF charge pipe and Tial BOV. BOV wasnt opening so checked vacuum and at idle I am pulling 10 in/hg and at rev 14 in/hg. Replaced vacuum lines at throttle body and 2 that run over the oil filter housing. Can any of you point me in a direction to look where my vacuum is escaping. Also 2 other points, my car is not throwing any codes and I am at altitude 5600 feet. Much appreciated for the help
	Appreciate 0 Tweet Quote

03-06-2015, 11:50 PM	#2
EvlShiftrE92 Lieutenant Colonel 108 Rep 1,568 Posts Drives: 😈 2016/17 M2 😈 Join Date: Sep 2010 Location: Fontana Cali Speedway iTrader: (4)	Check the ones where the two canister are at right by motor good luck The lines run down also as u can see mine needs to be replaced =P
	Appreciate 0 Quote

03-07-2015, 03:21 AM	#3
Levanime BimECU 193 Rep 759 Posts Drives: BMW Join Date: Dec 2014 Location: SD iTrader: (0) Garage List 2007 BMW 335 [0.00]	are you sure BOV is working fine? it should be opening some.. IMO
	Appreciate 0 Quote

03-07-2015, 09:31 AM	#4
RU QWKR New Member 2 Rep 27 Posts Drives: 2013 Frozen Blue M3 Join Date: Aug 2011 Location: Denver Co iTrader: (0)	The BOV could be an issue IMO but trying to rule out where some common leaks are to go hunting as everyone is telling me even at altitude I shouldnt be half of the vacuum that most cars run at. Thanks for the reply and input as it looks like I will be digging around the passenger side of the car a bit today
	Appreciate 0 Quote

03-07-2015, 09:46 AM	#6
RU QWKR New Member 2 Rep 27 Posts Drives: 2013 Frozen Blue M3 Join Date: Aug 2011 Location: Denver Co iTrader: (0)	fmonteiro444, great info and it will point me in the right direction to find out where this PITA leak is. Thanks for the input, it is much appreciated
	Appreciate 0 Quote

03-08-2015, 05:09 PM	#7
RU QWKR New Member 2 Rep 27 Posts Drives: 2013 Frozen Blue M3 Join Date: Aug 2011 Location: Denver Co iTrader: (0)	fmonteiro444, do I need to go factory vacuum lines for the ones that go back to the wastegates (with the sheathing) or did you replace with some loom on them. Found multiple little leaks on these old vacuum lines and a big one on the brake booster (elbow) on the firewall. My hopes are getting it all done next weekend and wanted to buy enough parts up front. Thanks again for your input.
	Appreciate 0 Quote

03-08-2015, 05:15 PM	#8
RU QWKR New Member 2 Rep 27 Posts Drives: 2013 Frozen Blue M3 Join Date: Aug 2011 Location: Denver Co iTrader: (0)	EvlShiftrE92.....Thanks for the pics....Mine was also shot, lol.
	Appreciate 0 Quote

03-19-2015, 08:11 PM	#10
RU QWKR New Member 2 Rep 27 Posts Drives: 2013 Frozen Blue M3 Join Date: Aug 2011 Location: Denver Co iTrader: (0)	All fixed and running like a top. Had to get a different spring in the BOV because I am at altitude, but all is well. Thanks for the help.
	Appreciate 0 Quote

03-19-2015, 10:18 PM	#11
ferocity02 Colonel 530 Rep 2,083 Posts Drives: 2013 135is Join Date: May 2014 Location: USA iTrader: (8)	We're you able to get more vaccuum? Or did you just replace the spring? I had to use a 10psi spring in mine because it wouldn't open fast enough with the 10psi spring. Buy I'm at sea level.
	Appreciate 0 Quote