Hks bov issues

BMWFREAK03 · 03-12-2011, 03:14 AM

Hey everyone. I posted about this issue before on another topic but got no response. I'm hoping I get some help from here.

So here's my problem: I took my car into the dealers because of a high pressure fuel pump recall and they also had to do a software upgrade as well. Keep in mind I had the hks bov installed before taking my car in and it was working fine. After i get my car back my bov performing the same. Now I have to rev pretty high Rpms in order to get a little sound out of it where before it would blow off at low Rpms. Also when I'm at wot it hesitates to blow off. Any ideas?

dcorn · 03-15-2011, 01:00 PM

Could have something to do with the software upgrade and wastegate position. Or maybe the tech somehow screwed with the vacuum lines going to the BOV?

G0FNDM3 · 03-15-2011, 01:06 PM

Quote:

Originally Posted by Executive03

Hey everyone. I posted about this issue before on another topic but got no response. I'm hoping I get some help from here.

So here's my problem: I took my car into the dealers because of a high pressure fuel pump recall and they also had to do a software upgrade as well. Keep in mind I had the hks bov installed before taking my car in and it was working fine. After i get my car back my bov performing the same. Now I have to rev pretty high Rpms in order to get a little sound out of it where before it would blow off at low Rpms. Also when I'm at wot it hesitates to blow off. Any ideas?

What RPM do you have to take it up to in order to hear the BOV? What did you have to rev it up too?

michael1284 · 03-15-2011, 01:31 PM

Quote:

Originally Posted by dcorn

Could have something to do with the software upgrade and wastegate position. Or maybe the tech somehow screwed with the vacuum lines going to the BOV?

check the vacuum lines.

bimmertt · 03-15-2011, 01:52 PM

One thing you can try is to rev or drive immediately after a cold start and see if you hear it during low rpms.

With the new software, I have noticed the wastegate position is changed around 30 seconds to a minute after cold start.

BMWFREAK03 · 03-17-2011, 08:23 PM

I'm having a hard time justifying the software affecting my bov. As for the Rpms I have to take it to about 5-6k. I used to be able to hear it go off around 3-4k. But also when I go to wot around 7-8k rpm it hesitates to blow off.

mycoupe · 03-17-2011, 10:08 PM

Get rid of that junky valve and get a synapse!

Toker335i · 03-18-2011, 04:16 AM

Might be the update,
Are you running a tune?

G0FNDM3 · 03-18-2011, 07:30 AM

Quote:

Originally Posted by mycoupe

Get rid of that junky valve and get a synapse!

+1 on the synapse!

But seriously, I believe it may be the update. I installed my ER CP w/ Synapse BOV after my HPFP replacement about two weeks ago. In order to hear the BOV, I have to take it up to 3500 + RPM to hear it. My friend has a AA BOV kit and I can hear his at 2000+ RPM!

He has not had the HPFP replacement & software update. I wish I would have had my BOV kit installed before the update then I could answer your question efficiently.

bimmertt · 03-18-2011, 09:05 AM

Are either of you running a tune?

Black Sheep · 03-18-2011, 10:25 AM

mine works fine, I had a software update/hpfp done on Tuesday

G0FNDM3 · 03-18-2011, 11:43 AM

Quote:

Originally Posted by bimmertt

Are either of you running a tune?

I'm not running a tune, but my friend with the AA Bov kit is running JB3/Map 3. Hmmmm, I may have answered my own question!

bimmertt · 03-18-2011, 12:10 PM

Quote:

Originally Posted by BLKLYZ

I'm not running a tune, but my friend with the AA Bov kit is running JB3/Map 3. Hmmmm, I may have answered my own question!

You definitely did. Tune=higher boost levels=more compressed air to blow off.

BMWFREAK03 · 03-19-2011, 09:37 PM

Not running a tune. Looks like that's going to be my solution. Thanks.

Toker335i · 03-20-2011, 03:36 AM

Those darn software updates

03-12-2011, 03:14 AM	#1
BMWFREAK03 Private 5 Rep 81 Posts Drives: 2007 BMW 335i Join Date: Mar 2011 Location: Santa Clara, CA iTrader: (0)	Hks bov issues Hey everyone. I posted about this issue before on another topic but got no response. I'm hoping I get some help from here. So here's my problem: I took my car into the dealers because of a high pressure fuel pump recall and they also had to do a software upgrade as well. Keep in mind I had the hks bov installed before taking my car in and it was working fine. After i get my car back my bov performing the same. Now I have to rev pretty high Rpms in order to get a little sound out of it where before it would blow off at low Rpms. Also when I'm at wot it hesitates to blow off. Any ideas?
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03-15-2011, 01:00 PM	#2
dcorn Captain 90 Rep 952 Posts Drives: 2008 E90 335i Join Date: Dec 2009 Location: NoVA iTrader: (2)	Could have something to do with the software upgrade and wastegate position. Or maybe the tech somehow screwed with the vacuum lines going to the BOV?
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03-15-2011, 01:52 PM	#5
bimmertt Lieutenant Colonel 98 Rep 1,800 Posts Drives: 2007 e92 335i Join Date: Nov 2008 Location: Earth iTrader: (7)	One thing you can try is to rev or drive immediately after a cold start and see if you hear it during low rpms. With the new software, I have noticed the wastegate position is changed around 30 seconds to a minute after cold start.
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03-17-2011, 08:23 PM	#6
BMWFREAK03 Private 5 Rep 81 Posts Drives: 2007 BMW 335i Join Date: Mar 2011 Location: Santa Clara, CA iTrader: (0)	I'm having a hard time justifying the software affecting my bov. As for the Rpms I have to take it to about 5-6k. I used to be able to hear it go off around 3-4k. But also when I go to wot around 7-8k rpm it hesitates to blow off.
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03-17-2011, 10:08 PM	#7
mycoupe Banned 60 Rep 1,495 Posts Drives: 07 335i coupe 6spd Join Date: Dec 2009 Location: cincinnati, Ohio iTrader: (5)	Get rid of that junky valve and get a synapse!
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03-18-2011, 04:16 AM	#8
Toker335i Captain 68 Rep 854 Posts Drives: 335i/Sold--10" GTR Join Date: Oct 2010 Location: Socal iTrader: (2)	Might be the update, Are you running a tune? __________________ 10' Solid Red GTR 08' 335i 6MT - Sold 92' NA 300ZX 5speed - Sold 06 IS350 - Sold
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03-18-2011, 09:05 AM	#10
bimmertt Lieutenant Colonel 98 Rep 1,800 Posts Drives: 2007 e92 335i Join Date: Nov 2008 Location: Earth iTrader: (7)	Are either of you running a tune?
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03-18-2011, 10:25 AM	#11
Black Sheep A Zip an a Double Cup 80 Rep 4,462 Posts Drives: 2009 BMW 135i Join Date: Feb 2010 Location: McHenry, IL iTrader: (5)	mine works fine, I had a software update/hpfp done on Tuesday __________________ PTF Tuned \| RB's \| AMS FMIC \| AR DP's \| HPF Exhaust \| CP-E DCI \| Apex Arc 8's \| 235/275 Star Specs \|
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03-19-2011, 09:37 PM	#14
BMWFREAK03 Private 5 Rep 81 Posts Drives: 2007 BMW 335i Join Date: Mar 2011 Location: Santa Clara, CA iTrader: (0)	Not running a tune. Looks like that's going to be my solution. Thanks.
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03-20-2011, 03:36 AM	#15
Toker335i Captain 68 Rep 854 Posts Drives: 335i/Sold--10" GTR Join Date: Oct 2010 Location: Socal iTrader: (2)	Those darn software updates __________________ 10' Solid Red GTR 08' 335i 6MT - Sold 92' NA 300ZX 5speed - Sold 06 IS350 - Sold
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