I think my BMS drop in is finally broken in!

AughtOcho335 · 03-01-2014, 05:17 PM

Used to get boost leak 30FF when drop in filter was new. Stopped happening recently. Checked filter and it finally was soft and pliable enough to make a complete air tight seal where as before it was too rigid and hard. Also cleaned mounting area around box lid. Motor holds boost like a champ now! No fluctuation at all.

Can anyone relate to this or confirm my theory??

CT335xi · 03-01-2014, 05:28 PM

never heard of that but thats kind of interesting.

stanlalee · 03-01-2014, 05:54 PM

You can't have a boost leak pre turbo. All you would get with a bad seal is unfiltered air into the turbos instead of BMS filtered air.

Ingeniator · 03-01-2014, 06:03 PM

Quote:

Originally Posted by stanlalee

BMS filtered air.

Do they sell that in cans or bottles. Druidia still makes my favorite brand.

MDORPHN · 03-01-2014, 06:07 PM

As pointed out above, it is not possible for an air filter to have any bearing on a vacuum leak.

Neil

AughtOcho335 · 03-01-2014, 06:16 PM

Quote:

Originally Posted by MDORPHN

As pointed out above, it is not possible for an air filter to have any bearing on a vacuum leak.

Neil

I drive says underboost. I suppose that makes sense considering the DCIs have no seal. Was just thinking out loud, can't think of any other reason why my boost started holding steady and not fluctuating. The search continues

SINGH_ · 03-01-2014, 11:47 PM

you can run no intake(s) at all and never get a code... no maf/metering.. detection of leaks.. etc. --- so your boost-leak issues are 100% unrelated.

HeavyMetalRocker · 03-02-2014, 07:00 PM

Quote:

Originally Posted by Ingeniator

Quote:

Originally Posted by stanlalee

BMS filtered air.

Do they sell that in cans or bottles. Druidia still makes my favorite brand.

+1 maybe he should just switch from suck to blow!

CptJoe732 · 03-02-2014, 08:51 PM

You guys can berate me all you want but I was at the track and on my final run I ran into a 30ff code / underboost. I took it into the shop and they did a leak test and there was a small one from one of my intakes. I have the injen dci and when I installed them I didn't tighten them enough as I should of on the opposite end of the cones. They tightened everything up and I never ran into the code again.

stanlalee · 03-02-2014, 09:02 PM

Quote:

Originally Posted by CptJoe732

You guys can berate me all you want but I was at the track and on my final run I ran into a 30ff code / underboost. I took it into the shop and they did a leak test and there was a small one from one of my intakes. I have the injen dci and when I installed them I didn't tighten them enough as I should of on the opposite end of the cones. They tightened everything up and I never ran into the code again.

You may have underboosted but you did not have a boost leak from a loose filter. There is NO BOOST (positive pressure) before air goes into the turbo and gets compressed. You realize a properly sealed filter is MORE restrictive then one that's leaking air around the sides. If the air was clean your engine would like that better.

CptJoe732 · 03-02-2014, 09:08 PM

Quote:

Originally Posted by stanlalee

You may have underboosted but you did not have a boost leak from a loose filter. There is NO BOOST (positive pressure) before air goes into the turbo and gets compressed. You realize a properly sealed filter is MORE restrictive then one that's leaking air around the sides. If the air was clean your engine would like that better.

I believe you, I'm just letting everyone know what happened in my personal situation.

JAL0988 · 03-03-2014, 03:42 PM

Quote:

Originally Posted by Ingeniator

Do they sell that in cans or bottles. Druidia still makes my favorite brand.

Hahaha nice Spaceballs reference

03-01-2014, 05:17 PM	#1
AughtOcho335 Lieutenant 40 Rep 447 Posts Drives: AW E92 335i Join Date: Dec 2013 Location: Texas iTrader: (0)	I think my BMS drop in is finally broken in! Used to get boost leak 30FF when drop in filter was new. Stopped happening recently. Checked filter and it finally was soft and pliable enough to make a complete air tight seal where as before it was too rigid and hard. Also cleaned mounting area around box lid. Motor holds boost like a champ now! No fluctuation at all. Can anyone relate to this or confirm my theory?? Last edited by AughtOcho335; 03-01-2014 at 06:17 PM..
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03-01-2014, 05:28 PM	#2
CT335xi Major 684 Rep 1,434 Posts Drives: 2022 x5 m50i, 2005 evo 8 Join Date: Dec 2011 Location: Newtown, Ct iTrader: (0)	never heard of that but thats kind of interesting. __________________ 2022 x5 m50i - Dravit grey 2005 evo 8 (current) built 2.3 488/409 mustang dyno Old stable mates - 87 325i, 88 m3, 90 m3, 97 m3 4dr, 04 325xi, 91 gmc Syclone, 08 335xi, and 13 x3 35i msp 2014 x5 50i msport
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03-01-2014, 05:54 PM	#3
stanlalee Major 261 Rep 1,093 Posts Drives: 07' E92 335i manual Join Date: Oct 2013 Location: Newport News, Va iTrader: (0)	You can't have a boost leak pre turbo. All you would get with a bad seal is unfiltered air into the turbos instead of BMS filtered air.
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03-01-2014, 06:07 PM	#5
MDORPHN Colonel 291 Rep 2,898 Posts Drives: AW 1M Join Date: Oct 2010 Location: Wash, DC iTrader: (0)	As pointed out above, it is not possible for an air filter to have any bearing on a vacuum leak. Neil
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03-01-2014, 11:47 PM	#7
SINGH_ N54 E92 51 Rep 342 Posts Drives: 2009 BMW 335i Join Date: Nov 2013 Location: Nor Cal iTrader: (1)	you can run no intake(s) at all and never get a code... no maf/metering.. detection of leaks.. etc. --- so your boost-leak issues are 100% unrelated. __________________ Light Bolt-ons, Tunes, & Methanol Injection: 12.30 @ 115mph [2.0 60ft on Street Tires] [91 Octane] 1.59 Seconds Faster than Stock [as of 05/29/2014] Previous Vehicle: '65 Chevelle [LSx 6.0L/4L80e]
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03-02-2014, 08:51 PM	#9
CptJoe732 Second Lieutenant 20 Rep 217 Posts Drives: 2007 E90 N54 Join Date: Apr 2013 Location: Toms River NJ iTrader: (0)	You guys can berate me all you want but I was at the track and on my final run I ran into a 30ff code / underboost. I took it into the shop and they did a leak test and there was a small one from one of my intakes. I have the injen dci and when I installed them I didn't tighten them enough as I should of on the opposite end of the cones. They tightened everything up and I never ran into the code again.
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