E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Forced Induction Forum Sponsored by Active Autowerke

Forced Induction Forum Sponsored by Active Autowerke
Discuss supercharging, turbocharging and even nitrous and water injection here.
Sponsored by Active Autowerke

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 11-23-2008, 02:30 PM   #21
lrogers80
Registered User
 
Join Date: Oct 2008
Location: Atl
Posts: 81
My Ride: 323i
The vacuum source is coming from the back of the intake manifold next to the firewall.

Quote:
Originally Posted by BimmerDude18 View Post
Where is the boost gauge tapped in? By that, I mean is the vacuum line actually connecting to the intake manifold, or to a hose that is rerouted during install to be before the supercharger.

Pictures of the install could be helpful as well. Try to capture as much of the piping as possible, sometimes something simple can be the issue.
lrogers80 is offline   Reply With Quote
Old 11-23-2008, 02:31 PM   #22
lrogers80
Registered User
 
Join Date: Oct 2008
Location: Atl
Posts: 81
My Ride: 323i
Click image for larger version

Name:	IMG_3271.jpg
Views:	89
Size:	132.2 KB
ID:	293030
lrogers80 is offline   Reply With Quote
Old 11-23-2008, 02:34 PM   #23
lrogers80
Registered User
 
Join Date: Oct 2008
Location: Atl
Posts: 81
My Ride: 323i
Click image for larger version

Name:	1.JPG
Views:	65
Size:	7.3 KB
ID:	293031

Click image for larger version

Name:	2.jpg
Views:	78
Size:	167.8 KB
ID:	293032

Click image for larger version

Name:	3.jpg
Views:	56
Size:	123.4 KB
ID:	293033

Click image for larger version

Name:	4.jpg
Views:	51
Size:	159.4 KB
ID:	293034
lrogers80 is offline   Reply With Quote
Old 11-23-2008, 04:56 PM   #24
lrogers80
Registered User
 
Join Date: Oct 2008
Location: Atl
Posts: 81
My Ride: 323i
Ok I decided to change the boost gauge vacuum source. It's now connected to the bypass valve vacuum line and now I get -20 vacuum rather than -11, but still does not pass 0 at 5k rpm.

Click image for larger version

Name:	IMG_3301.jpg
Views:	57
Size:	115.7 KB
ID:	293037

Click image for larger version

Name:	Vacuum-20.jpg
Views:	41
Size:	142.0 KB
ID:	293038
lrogers80 is offline   Reply With Quote
Old 11-23-2008, 09:11 PM   #25
MachRc
E46Fanatic
 
MachRc's Avatar
 
Join Date: Sep 2002
Location: City of Angels
Posts: 6,481
My Ride: 2003 Technik S1 M3
it should be -15

i think your gonna have to recheck your install, you should get atleast 3-4 psi above 4k rpm at WOT.

the blower WILL make its presence known when you first drive it..its a pretty big difference to be noticed.. and if you dont feel it in the sit of your pants...

id recheck the install...some mechanical gauges are faulty...but im sure its not that..
__________________

"We've come a long long way together. Through the hard times and the good.
I have to celebrate you baby,.. I have to priase you like I should.."
MachRc is offline   Reply With Quote
Old 11-23-2008, 09:12 PM   #26
docwyte
Registered User
 
Join Date: Jul 2003
Location: Denver
Posts: 1,113
My Ride: '89 944 Turbo
No, -20 is pretty normal for vacuum at sea level. Are you sure you have the bypass valve plumbed properly? Realize that you have to be hard on the gas to get boost. If you're lightly on the gas, or cruising, it doesn't matter what rpm you're at, you won't be in boost.

If you're hard on the gas at 5k rpm and don't see any boost, you have a massive leak or a blown supercharger.
__________________
'89 Porsche 944 Turbo LS1 475hp track beast
'03 Audi allroad 475awhp daily driver
'03 BMW F650GS Dakar

http://forum.e46fanatics.com/signaturepics/sigpic14767_1.gif
docwyte is offline   Reply With Quote
Old 11-23-2008, 09:28 PM   #27
lrogers80
Registered User
 
Join Date: Oct 2008
Location: Atl
Posts: 81
My Ride: 323i
I can actually say I am not hard on the gas pedel. When you say WOT, you mean step on the pedal until it hits the floor? I never had a need to do that before the supercharger install to feel power. I thought the supercharger would give me power regardless or WOT? How could I tell if the Blower is bad?
lrogers80 is offline   Reply With Quote
Old 11-24-2008, 12:42 AM   #28
docwyte
Registered User
 
Join Date: Jul 2003
Location: Denver
Posts: 1,113
My Ride: '89 944 Turbo
If you're at partial throttle, alot of time the bypass valve will still divert the boost back into the intake tract. Stomp on the pedal! See if you get boost.
__________________
'89 Porsche 944 Turbo LS1 475hp track beast
'03 Audi allroad 475awhp daily driver
'03 BMW F650GS Dakar

http://forum.e46fanatics.com/signaturepics/sigpic14767_1.gif
docwyte is offline   Reply With Quote
Old 11-24-2008, 04:37 AM   #29
lrogers80
Registered User
 
Join Date: Oct 2008
Location: Atl
Posts: 81
My Ride: 323i
I currently have about 40 miles I should get it to about 100 today I'll hit it then, but before this I will be calling AA to make sure everything is working they way it should. I will post the results asap. Thanks again everyone for your help.
lrogers80 is offline   Reply With Quote
Old 11-24-2008, 05:50 AM   #30
lrogers80
Registered User
 
Join Date: Oct 2008
Location: Atl
Posts: 81
My Ride: 323i
I started the car this morning as it was warming up. The check engine light came on again. This time I got two of the Secondary Air system flow too low (Peake tool F5 and F6 )

and a new one Air Mass Sensor(Peake tool 08)

I could hear my secondary air pump running fine this morning. Not good
lrogers80 is offline   Reply With Quote
Old 11-24-2008, 09:11 AM   #31
redronin
Registered User
 
Join Date: Feb 2005
Location: PA
Posts: 3,979
My Ride: 330ci
if you have vac at idle and no boost at WOT you (partially) blew the main boost line off the bottom of the charger (if its centrifugal)

i gaurantee it.

if the compressor was bad you would hear it.

Last edited by redronin; 11-24-2008 at 09:14 AM.
redronin is offline   Reply With Quote
Old 11-24-2008, 09:18 AM   #32
redronin
Registered User
 
Join Date: Feb 2005
Location: PA
Posts: 3,979
My Ride: 330ci
p.s. i wouldnt drive this thing 100 miles in the condition. you will throw rich codes at WOT because there is not enough air making it to the block for all the fuel. could foul plugs or something.
redronin is offline   Reply With Quote
Old 11-24-2008, 09:20 AM   #33
Active Autowerke II
Past Site Sponsor
 
Active Autowerke II's Avatar
 
Join Date: Jan 2006
Location: Miami
Posts: 517
My Ride: BMWs
Send a message via AIM to Active Autowerke II
To the OP, you should be receiving an email from Craig this morning.
Active Autowerke II is offline   Reply With Quote
Old 11-24-2008, 09:24 AM   #34
redronin
Registered User
 
Join Date: Feb 2005
Location: PA
Posts: 3,979
My Ride: 330ci
Quote:
Originally Posted by lrogers80 View Post
Now that's what I was thinking, but at what point could I have this leak?
its the main line below the compressor. if the seal isnt right, it will hold air at atmospheric pressure (driving below boost etc) but under boost the seal will come apart and let loose all your boost, making you drive at atmosphere pressure when you should be at 130% or so. this is very hard to diagnose but seeing normal vac at idle, normal driving at low rpm,

and then seeing no boost at wot and blowing maf codes at wot is classic boost leak


if you paid for the install, have them fix it for free.
redronin is offline   Reply With Quote
Old 11-24-2008, 09:53 PM   #35
lrogers80
Registered User
 
Join Date: Oct 2008
Location: Atl
Posts: 81
My Ride: 323i
Ok I think the charger is working just fine. I went to homedepot and got some PVC piping and cuplers. I connected the boost gauge to the pvc pipe. In place of the intercooler. Picture below and the gauges does show boost when I get up to 3k RPM. It seems like my boost is getting to the engine, but Maybe the throttle boddy isn't taking it. I also replaced the bypass valve thinking that maybe it wasn't working, but that didn't help.
Also my valve didn't work I was able to blow air to both sides. I got a PCV valve from Pep post to take it's place still didn't help. Not sure what else to try now.


Click image for larger version

Name:	IMG_3325.jpg
Views:	43
Size:	113.3 KB
ID:	293204

Click image for larger version

Name:	IMG_3330.jpg
Views:	34
Size:	65.0 KB
ID:	293205

Click image for larger version

Name:	IMG_3332.jpg
Views:	35
Size:	57.9 KB
ID:	293206

Click image for larger version

Name:	IMG_3324.jpg
Views:	43
Size:	109.3 KB
ID:	293207
Attached Thumbnails
Click image for larger version

Name:	IMG_3303.jpg
Views:	50
Size:	151.1 KB
ID:	293208  

Last edited by lrogers80; 11-24-2008 at 09:56 PM.
lrogers80 is offline   Reply With Quote
Old 11-24-2008, 10:19 PM   #36
docwyte
Registered User
 
Join Date: Jul 2003
Location: Denver
Posts: 1,113
My Ride: '89 944 Turbo
What's that grey valve? If you're bypassing the intercooler and get boost, then you have an issue with the intercooler. Take it to a radiator shop and have it leak tested.
__________________
'89 Porsche 944 Turbo LS1 475hp track beast
'03 Audi allroad 475awhp daily driver
'03 BMW F650GS Dakar

http://forum.e46fanatics.com/signaturepics/sigpic14767_1.gif
docwyte is offline   Reply With Quote
Old 11-24-2008, 10:29 PM   #37
lrogers80
Registered User
 
Join Date: Oct 2008
Location: Atl
Posts: 81
My Ride: 323i
That gray valve is a check valve used for who know what....

The intercooler is fine. I thought it was leaking that's why I brought the PVC pipe. I drove it and same issue, That's when I decided to tap into the PVC pipe to measure boost and it went up to 8psi. This confirms that the charger and piping is sealed good. After the air gets into the throttle body that's when I have a problem. Maybe the TPS Sensor not ready correctly?
lrogers80 is offline   Reply With Quote
Old 11-24-2008, 10:57 PM   #38
mm325
Registered User
 
Join Date: May 2006
Location: ks
Posts: 63
My Ride: ESSe36325is,04zhp
Is that the check valve for the charcoal cannister?
mm325 is offline   Reply With Quote
Old 11-24-2008, 11:10 PM   #39
lrogers80
Registered User
 
Join Date: Oct 2008
Location: Atl
Posts: 81
My Ride: 323i
Yes.
lrogers80 is offline   Reply With Quote
Old 11-25-2008, 07:23 AM   #40
redronin
Registered User
 
Join Date: Feb 2005
Location: PA
Posts: 3,979
My Ride: 330ci
Quote:
Originally Posted by lrogers80 View Post
but Maybe the throttle boddy isn't taking it. ]
thats what i meant. not the charger outlet, the throttle body is what i blew a boost line off.


im telling you this is the problem, you need to reinstall your upper boost lines ( from the IC back to the throttle body.

i had the exact same thing happen to me, its the only explaination if the compressor doesnt sound broken (and you would hear it)
redronin is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 02:24 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use