normal vacuum and odd boost reading?

6BATMAN6 · 04-01-2014, 12:37 AM

Lol it sounds like the spring was working perfectly fine .. Trust me go back to your unpainted spring 11psi .. The bov should stay closed at start up .. Maybe open for half a second and then close right back up .. And its not supposed to open under boost either .. Were u getting a flutter with the unpainted spring? Its not and if its closed at idle then thats perfect

AlpineSwift · 04-01-2014, 12:42 AM

11 is yellow spring. Switching to it tomorrow. It's supposed to open off throttle (vent boost, post load, whatever the hell you want to call it), which it wasn't with an unmodified unpainted spring which clearly was not the correct spring.

6BATMAN6 · 04-01-2014, 12:49 AM

Quote:

Originally Posted by AlpineSwift

11 is yellow spring. Switching to it tomorrow. It's supposed to open off throttle (vent boost, post load, whatever the hell you want to call it), which it wasn't with an unmodified unpainted spring which clearly was not the correct spring.

What bov do you have? The 50mm tial bov 11 psi spring is unpainted.. Ive ran it on 3 cars ..

AlpineSwift · 04-01-2014, 12:50 AM

Tial Q

http://www.tialsport.com/documents/w3_tial_qqr_sp.pdf

6BATMAN6 · 04-01-2014, 12:50 AM

I guess the q is different..

F80M · 04-01-2014, 01:18 AM

Good thread. How do you build your smoke tester, op?

6BATMAN6 · 04-01-2014, 03:49 AM

Quote:

Originally Posted by -StanceCity-

Good thread. How do you build your smoke tester, op?

I drilled to holes
In the lid of a home depot bucket.. But barbed fitting in one of the holes and regular snap on fitting in the other with washers and bolts on the other side to tighten and seal .. The air in line running to a nebulizer and the air out line just one of those yellow coil lines with a on and off trigger nozzle..(this way i can build pressure in the bucket for a little) and insides i just lined it with a ton of aluminum foil (to keep from burning a whole in the bucket) and a ton of incense stuck into the aluminum foil and smoking .. Worked amazing.. I bought a fog machine to but ended up going the incense route cuz the fogger steam was way to hot .. And will leave a oily residue in the lines .. Idk how to post a video on here or would lol

AlpineSwift · 04-01-2014, 01:50 PM

Yellow spring is in. BOV is back to normal. No more fluttering, no more 2 stage venting BS.

6BATMAN6 · 04-01-2014, 02:25 PM

Quote:

Originally Posted by AlpineSwift

Yellow spring is in. BOV is back to normal. No more fluttering, no more 2 stage venting BS.

Good shit i guess u have the Q

6BATMAN6 · 04-01-2014, 02:33 PM

And for anyone else following this thread i did alot more research last night and saw that a few other people had cracks in the same exact spot .. Its very close to where the pcv is.. This is why rob beck made the upgraded pcv .. If that pcv goes bag it can leak pressure into the valve cover and cause a ton of problems .. Assuming this is why my valve cover cracked so i ordered the new pcv and putting in the new valve cover with it next week or when ever it arrives .. The one thing im still confused about it why im not getting the typical lean codes on bank one and 2 and why the pcv isnt throwing a code .. Again the only codes im throwing is overboost and mis on cylinder one .. Why not a random mis on all cylinders?

Acekid187 · 04-03-2014, 11:52 AM

I been following this thread and I'm still confused. My car might hit 5 psi tops. The bov makes the screaming like sound until I let off the gas and then the bov goes off. I'm rocking the yellow spring the he the tial comes with

Acekid187 · 04-03-2014, 11:52 AM

This just started recently.

lemonpark · 07-31-2014, 08:23 AM

my car kind of does this too.

JB4 running map5 and I was hitting boost then it would just cut out around 5k then boost again.
codes from JB4 say O2 sensor but the guys at Active said it could be vacuum lines.
Only get a half engine light and then limp mode, sometimes when i WOT but then somtimes it's fine and sometimes just the engine light (will check if its whens its hot or cold)

E92 420 · 10-12-2015, 05:18 AM

Quote:

Originally Posted by lemonpark

my car kind of does this too.

JB4 running map5 and I was hitting boost then it would just cut out around 5k then boost again.
codes from JB4 say O2 sensor but the guys at Active said it could be vacuum lines.
Only get a half engine light and then limp mode, sometimes when i WOT but then somtimes it's fine and sometimes just the engine light (will check if its whens its hot or cold)

You ever get to the bottom of this?

lemonpark · 10-19-2015, 07:10 AM

It was O2 sensor boosting to 18psi now

04-01-2014, 12:37 AM	#23
6BATMAN6 Private 6 Rep 98 Posts Drives: 2010 335i m package Join Date: Oct 2013 Location: Long Island NY iTrader: (0)	Lol it sounds like the spring was working perfectly fine .. Trust me go back to your unpainted spring 11psi .. The bov should stay closed at start up .. Maybe open for half a second and then close right back up .. And its not supposed to open under boost either .. Were u getting a flutter with the unpainted spring? Its not and if its closed at idle then thats perfect
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04-01-2014, 12:42 AM	#24
AlpineSwift Colonel 78 Rep 2,114 Posts Drives: 2008 335Xi Coupé Join Date: Feb 2010 Location: Castle Rock, CO iTrader: (3)	11 is yellow spring. Switching to it tomorrow. It's supposed to open off throttle (vent boost, post load, whatever the hell you want to call it), which it wasn't with an unmodified unpainted spring which clearly was not the correct spring. __________________ E92 '08 335Xi 6AT - Cobb AP3 Tuned by MAC Autosport, Original Prototype Xi DOCRace 6266 Single Turbo Swap, VRSF CP w/Synapse BOV, VRSF 7" FMIC, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Stoptech Stage 2 Slotted, xHP Stage 3, Earl's Racing Oil Cooler, Turner Boost Gauge, M3 Lip Spoiler. Standing Mile Record Holder for Xi over a mile high: 168.2MPH @ 5512'; The Colorado Mile hosted by The US Mile.
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04-01-2014, 12:50 AM	#26
AlpineSwift Colonel 78 Rep 2,114 Posts Drives: 2008 335Xi Coupé Join Date: Feb 2010 Location: Castle Rock, CO iTrader: (3)	Tial Q http://www.tialsport.com/documents/w3_tial_qqr_sp.pdf __________________ E92 '08 335Xi 6AT - Cobb AP3 Tuned by MAC Autosport, Original Prototype Xi DOCRace 6266 Single Turbo Swap, VRSF CP w/Synapse BOV, VRSF 7" FMIC, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Stoptech Stage 2 Slotted, xHP Stage 3, Earl's Racing Oil Cooler, Turner Boost Gauge, M3 Lip Spoiler. Standing Mile Record Holder for Xi over a mile high: 168.2MPH @ 5512'; The Colorado Mile hosted by The US Mile.
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04-01-2014, 12:50 AM	#27
6BATMAN6 Private 6 Rep 98 Posts Drives: 2010 335i m package Join Date: Oct 2013 Location: Long Island NY iTrader: (0)	I guess the q is different.. Attached Images
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04-01-2014, 01:18 AM	#28
F80M Major 90 Rep 1,456 Posts Drives: M Fap Join Date: Aug 2011 Location: in your rear view mirror... iTrader: (2)	Good thread. How do you build your smoke tester, op?
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04-01-2014, 01:50 PM	#30
AlpineSwift Colonel 78 Rep 2,114 Posts Drives: 2008 335Xi Coupé Join Date: Feb 2010 Location: Castle Rock, CO iTrader: (3)	Yellow spring is in. BOV is back to normal. No more fluttering, no more 2 stage venting BS. __________________ E92 '08 335Xi 6AT - Cobb AP3 Tuned by MAC Autosport, Original Prototype Xi DOCRace 6266 Single Turbo Swap, VRSF CP w/Synapse BOV, VRSF 7" FMIC, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Stoptech Stage 2 Slotted, xHP Stage 3, Earl's Racing Oil Cooler, Turner Boost Gauge, M3 Lip Spoiler. Standing Mile Record Holder for Xi over a mile high: 168.2MPH @ 5512'; The Colorado Mile hosted by The US Mile.
	Appreciate 0 Quote

04-01-2014, 02:33 PM	#32
6BATMAN6 Private 6 Rep 98 Posts Drives: 2010 335i m package Join Date: Oct 2013 Location: Long Island NY iTrader: (0)	And for anyone else following this thread i did alot more research last night and saw that a few other people had cracks in the same exact spot .. Its very close to where the pcv is.. This is why rob beck made the upgraded pcv .. If that pcv goes bag it can leak pressure into the valve cover and cause a ton of problems .. Assuming this is why my valve cover cracked so i ordered the new pcv and putting in the new valve cover with it next week or when ever it arrives .. The one thing im still confused about it why im not getting the typical lean codes on bank one and 2 and why the pcv isnt throwing a code .. Again the only codes im throwing is overboost and mis on cylinder one .. Why not a random mis on all cylinders?
	Appreciate 0 Quote

04-03-2014, 11:52 AM	#33
Acekid187 Lieutenant 27 Rep 423 Posts Drives: E92 335i, E90 335i Join Date: Mar 2013 Location: Hawaii iTrader: (6)	I been following this thread and I'm still confused. My car might hit 5 psi tops. The bov makes the screaming like sound until I let off the gas and then the bov goes off. I'm rocking the yellow spring the he the tial comes with
	Appreciate 0 Quote

07-31-2014, 08:23 AM	#35
lemonpark Captain 60 Rep 610 Posts Drives: '08 335i E92 Join Date: May 2014 Location: Melbourne iTrader: (0)	my car kind of does this too. JB4 running map5 and I was hitting boost then it would just cut out around 5k then boost again. codes from JB4 say O2 sensor but the guys at Active said it could be vacuum lines. Only get a half engine light and then limp mode, sometimes when i WOT but then somtimes it's fine and sometimes just the engine light (will check if its whens its hot or cold) __________________ JB4 G5 ISO \| BMS Backend Flash \| Alpina B3 TCU Flash \| AR Design Catless DP \| BMS DCI \| ER CP \| Turbosmart Race Port BOV \| Muffler Delete \| H&R Sport Springs \| BMS Cowl \| BMW Performance Alcantara Wheel \| M3 DCT Paddles \| Muse Concept and Design Interior \| 19" GTC-CX \| M3 Lip Spoiler \| Zieg CF Rear Diffuser \| Flow Designs Front Lip \| Black Grill \| RGB LED Angel Eyes \| 8000K HID \|
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10-19-2015, 07:10 AM	#37
lemonpark Captain 60 Rep 610 Posts Drives: '08 335i E92 Join Date: May 2014 Location: Melbourne iTrader: (0)	It was O2 sensor boosting to 18psi now __________________ JB4 G5 ISO \| BMS Backend Flash \| Alpina B3 TCU Flash \| AR Design Catless DP \| BMS DCI \| ER CP \| Turbosmart Race Port BOV \| Muffler Delete \| H&R Sport Springs \| BMS Cowl \| BMW Performance Alcantara Wheel \| M3 DCT Paddles \| Muse Concept and Design Interior \| 19" GTC-CX \| M3 Lip Spoiler \| Zieg CF Rear Diffuser \| Flow Designs Front Lip \| Black Grill \| RGB LED Angel Eyes \| 8000K HID \|
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