vacuum line fix - low boost, underboost, 30ff, wastegate rattle

Dynomyte · 06-12-2013, 02:17 PM

Yeah I saw that I still can not figure out which part it is.

Is it possible that it is Part 9?
http://www.realoem.com/bmw/showparts...56&hg=34&fg=27

citg0 · 06-26-2013, 07:26 PM

How in the shit did you guys replace the line that goes to the front turbo? Do I have giant-hands, or should I be going at this from beneath?

robc1976 · 06-26-2013, 08:00 PM

Quote:

Originally Posted by citg0

How in the shit did you guys replace the line that goes to the front turbo? Do I have giant-hands, or should I be going at this from beneath?

Lol! My wife did mine.

Killerfish2012 · 06-29-2013, 02:58 PM

Thanks again to the OP, and others who have contributed. Just did this not too long ago, cuz I was plagued by 30FF at the track (road course). Before I did this, I was thinking it was the boost solenoids, since I am an '07, at 107K miles. Had done all the other vacuum lines previously, but missed these two behind the oil filter. Did both lines all the way through to the canisters. removed the crappy torn up oem cloth lines, and even eliminated these oem plastic things between the canisters, and the cloth lines:

New silicone lines:

Result? Did a track day yesterday, used to get 30FF at high rpms in 4th, and the 30FF issue has disappeared!

tofu- · 06-29-2013, 04:19 PM

i never considered eliminating the plastic lines. good idea

bergman · 07-07-2013, 02:09 PM

Quote:

Originally Posted by smellfish

+1 on the sticky! My break was essentially the same, the line split right off the connector. I was about to break down and take her to a shop until I read this. I replaced the line with some hose I had from my SR20 build 6 years ago. Back to 9.0 psi between stop lights.

Hoarding and E90Post FTW!

would this leak cause engine malfunction to arise?

Bavarian Black · 08-18-2013, 09:25 AM

Quote:

Originally Posted by R 4 5 T 4 M 4 N

the OEM has a fabric around it, not just the rubber tubing.

Exactly. It has heat resistant mesh around the plastic tune.

BB

robc1976 · 08-18-2013, 12:14 PM

Here is another for reference

Bavarian Black · 08-20-2013, 06:33 AM

The high heat resistant mesh sourounding the high temp vacuum lines which have lasted on average 100 k are the best lines to use according to BMW. The plastic heat resistant vaccum lines are good, but I like to keep mine OEM. Hopefully there is a company out there that is working on some solid ass lines, with a small titanium plate that can fit behind the oil filter...that would be cool.

BB

MikeE90NC · 08-28-2013, 01:40 PM

So, 3.5mm or 4mm size to order? Ive seen both sizes mentioned in this thread.

BlackBB6 · 08-28-2013, 02:45 PM

Quote:

Originally Posted by MikeE90NC

So, 3.5mm or 4mm size to order? Ive seen both sizes mentioned in this thread.

OEM is 3.5, but it seems people have used 4 as well.

kevino002 · 09-24-2013, 03:36 PM

I was getting the half engine light and could tell that I had little to no boost. Did a search on here and came across this tread. Got home last night, popped open the hood to inspect my vac lines and when I grabbed one it just fell apart! replaced them and my car seems like it is now on crack! Great info and I recommend anyone that is over 50k to take a look at these. Thanks OP!!

Morning Would · 09-25-2013, 11:45 AM

Just did mine last week also after chasing the half engine light for a couple weeks. It was the bottom one behind the oil filter. new hose and bam, no more problems. Thanks OP. This thread just keeps on giving.

Bavarian Black · 09-26-2013, 07:10 AM

Guys remember the canister lines that run behind the Oil filter are Tubes with mesh, the remaining are the ones with the mesh to withstand high temps. I changed mine 1 month ago and thank god no issues or codes, the mesh lines had tiny cuts and that was the culprit of underboost.

One question, if you pop off the vacum lines on the 2 passenger side canisters and u hear air gush out, does that mean you have a good Vaacum or should they not release air, and should the car be on?

Bavarian Black · 09-26-2013, 02:02 PM

No chime?

Bavarian Black · 09-26-2013, 02:05 PM

Quote:

Originally Posted by robc1976

Here is another for reference

They are not supposed to be full silicon at the part behind the OF...

Farroar · 10-05-2013, 02:17 PM

First time posting here. I've been getting 30FF / P0299 codes for the past coupe of weeks. Happening under load in 3rd or 4th gear and not always at WOT. Driving me nuts! My Bentley manual doesn't have much when it comes to the vacuum lines, or at least I'm not finding it. Found the thread, popped the engine cover and there it was! 6$ later and my car has better and smoother boost than it has had in a while. Thanks for putting the time in and posting!

After a few more maintenance items, I'm going for the JB4.

Jeffman · 03-28-2014, 08:46 AM

Great thread, OP! +1

tinnsoldaten · 04-21-2014, 03:25 PM

Fill in my experience and get some possible feeback:

I had my car have a major service to engine , new water pump , thermostat , vanos soleniods , injectors , all the bits known to fail basically...

After first start up the car run great , but after some hard pulls a day or two later , I started getting codes , exhaust fumes low pressure side turbo , rich fuel mix fault , and did find some faults during investigation.

Chargepipe had a section that was leaking , fixed - still getting engine light
Checked vacuum , used a vaccum pump with gauge on canisters , towards wastegate I got a quick -20 psi on both
Through canister and towards vacuum supply I had to pump like a mad man and gave up at 5 or 10 psi , when I pulled hose from canister , I heard the hiss , but it sounded like the hiss traveled towards oilfilter housing , curious if the plastic section for vacuum should be eliminated and use silicone all the way.

Other fault that I found during vacuum test was that the connector by windshield , going to brake booster , that was loose , reattached it and did my vacuum testing.

After this I did a test drive , my boost gauge reads -23 and stops at 0.0 and then half engine light

After I returned , I popped hood and pulled vacuum line from canister , hiss sound.

Any ideas ?

I have my own thread for my issues , try not to soil OPs good thread with my mystery until it is solved

http://www.e90post.com/forums/showthread.php?t=965922

thatguy09 · 04-28-2014, 01:43 PM

+1 for this fix. 30FF with 1/2 engine light hitting at 4000 RPM in 3rd gear. Replaced these two lines with some Silicone hoses from Verocious and bam, boost! Car feels new again.

v1nc86 · 04-29-2014, 08:28 AM

what Silicone hoses did you buy? link?

never mind, first post says Dayco 80210...

Nguyenhu0106 · 04-29-2014, 05:25 PM

+1, replaced the 4 vacuum lines with silicone hoses and my rattle went away...
glad i didn't try adjusting the wastegate rod.

06-12-2013, 02:17 PM	#111
Dynomyte Private First Class 11 Rep 166 Posts Drives: BMW 335i E92 Join Date: Jan 2007 Location: Montreal, Canada iTrader: (0)	Yeah I saw that I still can not figure out which part it is. Is it possible that it is Part 9? http://www.realoem.com/bmw/showparts...56&hg=34&fg=27 Last edited by Dynomyte; 06-12-2013 at 02:24 PM..
	Appreciate 0 Quote

06-26-2013, 07:26 PM	#112
citg0 Private First Class 3 Rep 188 Posts Drives: 3DIRTY5 Join Date: Aug 2010 Location: 21286 iTrader: (2)	How in the shit did you guys replace the line that goes to the front turbo? Do I have giant-hands, or should I be going at this from beneath?
	Appreciate 0 Quote

06-29-2013, 02:58 PM	#114
Killerfish2012 Colonel 177 Rep 2,301 Posts Drives: E90 335I, E92 M3 Join Date: Feb 2012 Location: Midwest iTrader: (9)	Thanks again to the OP, and others who have contributed. Just did this not too long ago, cuz I was plagued by 30FF at the track (road course). Before I did this, I was thinking it was the boost solenoids, since I am an '07, at 107K miles. Had done all the other vacuum lines previously, but missed these two behind the oil filter. Did both lines all the way through to the canisters. removed the crappy torn up oem cloth lines, and even eliminated these oem plastic things between the canisters, and the cloth lines: New silicone lines: Result? Did a track day yesterday, used to get 30FF at high rpms in 4th, and the 30FF issue has disappeared! __________________ '07 335I w/ Mods '13 X1 Stock '11 X3 K&N
	Appreciate 0 Quote

06-29-2013, 04:19 PM	#115
tofu- Banned 86 Rep 2,854 Posts Drives: 335i Jet Black/Coral Red Join Date: Mar 2010 Location: nyc iTrader: (4)	i never considered eliminating the plastic lines. good idea
	Appreciate 0 Quote

08-18-2013, 12:14 PM	#118
robc1976 DIYER 614 Rep 5,521 Posts Drives: E90 335i Join Date: Mar 2012 Location: Illinois iTrader: (14)	Here is another for reference Attached Images __________________ JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
	Appreciate 0 Quote

08-20-2013, 06:33 AM	#119
Bavarian Black Second Lieutenant 8 Rep 297 Posts Drives: 08 335i MS Join Date: Feb 2013 Location: LB iTrader: (0)	The high heat resistant mesh sourounding the high temp vacuum lines which have lasted on average 100 k are the best lines to use according to BMW. The plastic heat resistant vaccum lines are good, but I like to keep mine OEM. Hopefully there is a company out there that is working on some solid ass lines, with a small titanium plate that can fit behind the oil filter...that would be cool. BB __________________ 08 335i MSPORT & PR PKG/aFe St2 DCI/AA BOV kit +DP/SprintBooster Stage 2/Avant Garde 19 rims/ HNK V12 Pro Tires/BMS Wheel Spacers/ E92 M F n B kit incl blk kidney grills and sensors/Afe mach Exhaust. M3 skirts, DNA map 3
	Appreciate 0 Quote

08-28-2013, 01:40 PM	#120
MikeE90NC Second Lieutenant 22 Rep 257 Posts Drives: 2007 BMW 335i Join Date: Jul 2013 Location: Somewhere, NC iTrader: (1)	So, 3.5mm or 4mm size to order? Ive seen both sizes mentioned in this thread.
	Appreciate 0 Quote

09-24-2013, 03:36 PM	#122
kevino002 Private 0 Rep 54 Posts Drives: 335xi sedan Join Date: Jun 2009 Location: Denver iTrader: (0)	I was getting the half engine light and could tell that I had little to no boost. Did a search on here and came across this tread. Got home last night, popped open the hood to inspect my vac lines and when I grabbed one it just fell apart! replaced them and my car seems like it is now on crack! Great info and I recommend anyone that is over 50k to take a look at these. Thanks OP!!
	Appreciate 0 Quote

09-25-2013, 11:45 AM	#123
Morning Would Private 0 Rep 96 Posts Drives: like a boss Join Date: May 2013 Location: just below the poverty line iTrader: (0)	Just did mine last week also after chasing the half engine light for a couple weeks. It was the bottom one behind the oil filter. new hose and bam, no more problems. Thanks OP. This thread just keeps on giving.
	Appreciate 0 Quote

09-26-2013, 07:10 AM	#124
Bavarian Black Second Lieutenant 8 Rep 297 Posts Drives: 08 335i MS Join Date: Feb 2013 Location: LB iTrader: (0)	Guys remember the canister lines that run behind the Oil filter are Tubes with mesh, the remaining are the ones with the mesh to withstand high temps. I changed mine 1 month ago and thank god no issues or codes, the mesh lines had tiny cuts and that was the culprit of underboost. One question, if you pop off the vacum lines on the 2 passenger side canisters and u hear air gush out, does that mean you have a good Vaacum or should they not release air, and should the car be on? __________________ 08 335i MSPORT & PR PKG/aFe St2 DCI/AA BOV kit +DP/SprintBooster Stage 2/Avant Garde 19 rims/ HNK V12 Pro Tires/BMS Wheel Spacers/ E92 M F n B kit incl blk kidney grills and sensors/Afe mach Exhaust. M3 skirts, DNA map 3 Last edited by Bavarian Black; 09-26-2013 at 02:06 PM..
	Appreciate 0 Quote

09-26-2013, 02:02 PM	#125
Bavarian Black Second Lieutenant 8 Rep 297 Posts Drives: 08 335i MS Join Date: Feb 2013 Location: LB iTrader: (0)	No chime? __________________ 08 335i MSPORT & PR PKG/aFe St2 DCI/AA BOV kit +DP/SprintBooster Stage 2/Avant Garde 19 rims/ HNK V12 Pro Tires/BMS Wheel Spacers/ E92 M F n B kit incl blk kidney grills and sensors/Afe mach Exhaust. M3 skirts, DNA map 3
	Appreciate 0 Quote

10-05-2013, 02:17 PM	#127
Farroar Private 17 Rep 60 Posts Drives: 2019 G05 xDrive40i Join Date: Jan 2012 Location: MA iTrader: (0)	Thanks! First time posting here. I've been getting 30FF / P0299 codes for the past coupe of weeks. Happening under load in 3rd or 4th gear and not always at WOT. Driving me nuts! My Bentley manual doesn't have much when it comes to the vacuum lines, or at least I'm not finding it. Found the thread, popped the engine cover and there it was! 6$ later and my car has better and smoother boost than it has had in a while. Thanks for putting the time in and posting! After a few more maintenance items, I'm going for the JB4.
	Appreciate 0 Quote

03-28-2014, 08:46 AM	#128
Jeffman Lieutenant 28 Rep 488 Posts Drives: 2008 335xi E90 Join Date: Jul 2010 Location: Somewhere in America iTrader: (1) Garage List 2008 335xi Sedan [0.00]	Great thread, OP! +1
	Appreciate 0 Quote

04-21-2014, 03:25 PM	#129
tinnsoldaten Captain 34 Rep 715 Posts Drives: e92 335i coupe Join Date: Dec 2008 Location: Bergen iTrader: (1)	Fill in my experience and get some possible feeback: I had my car have a major service to engine , new water pump , thermostat , vanos soleniods , injectors , all the bits known to fail basically... After first start up the car run great , but after some hard pulls a day or two later , I started getting codes , exhaust fumes low pressure side turbo , rich fuel mix fault , and did find some faults during investigation. Chargepipe had a section that was leaking , fixed - still getting engine light Checked vacuum , used a vaccum pump with gauge on canisters , towards wastegate I got a quick -20 psi on both Through canister and towards vacuum supply I had to pump like a mad man and gave up at 5 or 10 psi , when I pulled hose from canister , I heard the hiss , but it sounded like the hiss traveled towards oilfilter housing , curious if the plastic section for vacuum should be eliminated and use silicone all the way. Other fault that I found during vacuum test was that the connector by windshield , going to brake booster , that was loose , reattached it and did my vacuum testing. After this I did a test drive , my boost gauge reads -23 and stops at 0.0 and then half engine light After I returned , I popped hood and pulled vacuum line from canister , hiss sound. Any ideas ? I have my own thread for my issues , try not to soil OPs good thread with my mystery until it is solved http://www.e90post.com/forums/showthread.php?t=965922 __________________ Vargas S2 turbos\|VAC S3 Cylinder head\|RR DPs\|RR MPs\|Supersprint X pipe\|Remus Quad Sport mufflers\|aFe Stage 2 Si with scoops\|Forge DVs\|ER CP\|BMS meth elbow\|Aquamist HFS-4\|Walbro 450 E85 LPFP\|AA FMIC\|BMS OCC\|MHD\|P3 Boost Gauge\|Ohlins Road & Track + camberplates\|M3 sways F/R+ Ground control endlinks\|Vorsteiner v303 19"\|Michelin PS2 sport\|Quaife LSD\|Vorsteiner V35 CF hood\|CF CLS trunk\|Duke Dynamics quad diffusor
	Appreciate 0 Quote

04-28-2014, 01:43 PM	#130
thatguy09 Enlisted Member 5 Rep 42 Posts Drives: 2019 X3 M40i Join Date: Aug 2013 Location: United States iTrader: (0)	+1 for this fix. 30FF with 1/2 engine light hitting at 4000 RPM in 3rd gear. Replaced these two lines with some Silicone hoses from Verocious and bam, boost! Car feels new again.
	Appreciate 0 Quote

04-29-2014, 08:28 AM	#131
v1nc86 Captain 25 Rep 633 Posts Drives: 335xi Join Date: Mar 2013 Location: Montreal iTrader: (0)	what Silicone hoses did you buy? link? never mind, first post says Dayco 80210... __________________ YouTube \| 335xi Best 1/4 mile: 12.3@110 MPH \| 335xi Top speed: 0-270 kph (165+ mph)
	Appreciate 0 Quote

04-29-2014, 05:25 PM	#132
Nguyenhu0106 Private First Class 27 Rep 199 Posts Drives: 2007 335i Join Date: Dec 2012 Location: Chicago, il iTrader: (1)	+1, replaced the 4 vacuum lines with silicone hoses and my rattle went away... glad i didn't try adjusting the wastegate rod.
	Appreciate 0 Quote