E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Loss 5 psi of boost after intercooler install



Reply
 
Thread Tools Search this Thread
      08-03-2010, 11:07 AM   #1
STONEY_M5
MAAD HEAD
STONEY_M5's Avatar
No_Country
55
Rep
1,125
Posts

Drives: 2010 X5M 2013 M5
Join Date: Jan 2010
Location: NYC

iTrader: (4)

Garage List
13 F10 M5  [0.00]
2010 X5M  [0.00]
07 335i  [4.63]
Loss 5 psi of boost after intercooler install

I have a question which is really bothering me.. I bought the spearco/turbonetics intercooler, after the install i took it for a test drive and noticed that my boost gauge was reading only 9 psi peak as oppose to the 15psi peak i was running before the install. I know that you should expect some loss of pressure due to the bigger intercooler, but not such a big loss. power did fall off a bit but not much. Is this something to worry about or is it normal??? I upped the boost about 2psi and if felt a little bit more powerful than b4 which was expected... Somebody please help........
__________________
F10 M5 e70 X5M
Sold E90 335i
Appreciate 0
      08-03-2010, 11:14 AM   #2
Overboost
Second Lieutenant
Overboost's Avatar
United_States
12
Rep
284
Posts

Drives: Monaco Blue 335i
Join Date: Mar 2010
Location: Kentucky

iTrader: (0)

Check for leaks... 5psi is ALOT!!!
Appreciate 0
      08-03-2010, 11:16 AM   #3
Tiago@VRSF
Tiago@VRSF's Avatar
United_States
2039
Rep
43,357
Posts

Drives: F90 M5
Join Date: Dec 2007
Location: Doral, FL

iTrader: (99)

Garage List
Pressure loss at that range should only be 1 psi at the most, you have a boost leak.
Appreciate 0
      08-03-2010, 11:17 AM   #4
jpsimon
Team Zissou
jpsimon's Avatar
United_States
1052
Rep
9,750
Posts

Drives: 2016 M3 (AW, 6MT)
Join Date: Dec 2006
Location: CT

iTrader: (7)

something isn't connected! check for leaks
__________________
2016 M3 (AW, 6MT) | San Marino Blue 2022 M3c AWD incoming

www.datazap.me - fast, free, interactive data log viewing
Appreciate 0
      08-03-2010, 11:20 AM   #5
kjrulz
Mastermind
kjrulz's Avatar
60
Rep
1,360
Posts

Drives: girls krazy
Join Date: Jan 2009
Location: your mother

iTrader: (5)

get out of there...it's gonna BLOW!!!!
Appreciate 0
      08-03-2010, 11:28 AM   #6
STONEY_M5
MAAD HEAD
STONEY_M5's Avatar
No_Country
55
Rep
1,125
Posts

Drives: 2010 X5M 2013 M5
Join Date: Jan 2010
Location: NYC

iTrader: (4)

Garage List
13 F10 M5  [0.00]
2010 X5M  [0.00]
07 335i  [4.63]
did a smoke test there is no leak
__________________
F10 M5 e70 X5M
Sold E90 335i
Appreciate 0
      08-03-2010, 11:29 AM   #7
kjrulz
Mastermind
kjrulz's Avatar
60
Rep
1,360
Posts

Drives: girls krazy
Join Date: Jan 2009
Location: your mother

iTrader: (5)

that stock intercooler must have REALLY been holding you back...
Appreciate 0
      08-03-2010, 11:29 AM   #8
STONEY_M5
MAAD HEAD
STONEY_M5's Avatar
No_Country
55
Rep
1,125
Posts

Drives: 2010 X5M 2013 M5
Join Date: Jan 2010
Location: NYC

iTrader: (4)

Garage List
13 F10 M5  [0.00]
2010 X5M  [0.00]
07 335i  [4.63]
Quote:
Originally Posted by kjrulz View Post
get out of there...it's gonna BLOW!!!!
What's gonna blow??? Don't say shit like that unless you are serious cuz now u have me extremely nervous....
__________________
F10 M5 e70 X5M
Sold E90 335i
Appreciate 0
      08-03-2010, 11:30 AM   #9
Tiago@VRSF
Tiago@VRSF's Avatar
United_States
2039
Rep
43,357
Posts

Drives: F90 M5
Join Date: Dec 2007
Location: Doral, FL

iTrader: (99)

Garage List
If there's no leak you disconnected something accidentally or the intercooler has something clogging the inlets.

Smokes only going to get you so far, I'd recommend using an actual boost leak tester to pressurize the system.
Appreciate 0
      08-03-2010, 11:31 AM   #10
STONEY_M5
MAAD HEAD
STONEY_M5's Avatar
No_Country
55
Rep
1,125
Posts

Drives: 2010 X5M 2013 M5
Join Date: Jan 2010
Location: NYC

iTrader: (4)

Garage List
13 F10 M5  [0.00]
2010 X5M  [0.00]
07 335i  [4.63]
Quote:
Originally Posted by jpsimon View Post
something isn't connected! check for leaks
the only thing you connect is the hot side and cold side... What else could it be??? couplers dnt have any holes everything is sealed...
__________________
F10 M5 e70 X5M
Sold E90 335i
Appreciate 0
      08-03-2010, 11:35 AM   #11
Jeff@TopGearSolutions
Jeff@TopGearSolutions's Avatar
United_States
3376
Rep
79,257
Posts

Drives: C6 Z06, 09 335i, 10 335xi
Join Date: Dec 2008
Location: www.TopGearSolutions.com

iTrader: (37)

What tune are you using?

5 PSI is a lot, how did you check for leaks?

Visual check doesnt cut it.... Figure this, as the car sits there there is no pressure(just atmospheric pressure), when you pressurize the system, things expand. Check your couplers and fittings AGAIN.
Appreciate 0
      08-03-2010, 11:36 AM   #12
STONEY_M5
MAAD HEAD
STONEY_M5's Avatar
No_Country
55
Rep
1,125
Posts

Drives: 2010 X5M 2013 M5
Join Date: Jan 2010
Location: NYC

iTrader: (4)

Garage List
13 F10 M5  [0.00]
2010 X5M  [0.00]
07 335i  [4.63]
Quote:
Originally Posted by tvieira24 View Post
If there's no leak you disconnected something accidentally or the intercooler has something clogging the inlets.

Smokes only going to get you so far, I'd recommend using an actual boost leak tester to pressurize the system.
Like what??? Where do I get that boost leak tester??? The smoke test was done the smoke came out of the air box and we did not see smoke anywhere else.. The reason i am nervous is becuz i upped the boost and i dnt wanna over rev the turbos. My guage now says 12.5psi max so that means im probably pushing upwards of 17 psi at the turbos right?
__________________
F10 M5 e70 X5M
Sold E90 335i
Appreciate 0
      08-03-2010, 11:36 AM   #13
STONEY_M5
MAAD HEAD
STONEY_M5's Avatar
No_Country
55
Rep
1,125
Posts

Drives: 2010 X5M 2013 M5
Join Date: Jan 2010
Location: NYC

iTrader: (4)

Garage List
13 F10 M5  [0.00]
2010 X5M  [0.00]
07 335i  [4.63]
Quote:
Originally Posted by JPSlick View Post
What tune are you using?

5 PSI is a lot, how did you check for leaks?
Dinan, we did a smoke test...
__________________
F10 M5 e70 X5M
Sold E90 335i
Appreciate 0
      08-03-2010, 12:11 PM   #14
02themax
Captain
02themax's Avatar
23
Rep
947
Posts

Drives: E90 335i
Join Date: Apr 2008
Location: Calgary, AB

iTrader: (6)

I would recheck every single coupler from the intake to the IC and back to the engine. if all is tight then you're fine.
__________________

E90 335i
Sport Package - Logic 7 Sound w/ipod - Bluetooth - Comfort Access - PDC - 19" M3 Reps 275/30 235/35 - Blacklines - 10mil spacers rear, 5mil spacers front - BMW Alarm
Appreciate 0
      08-03-2010, 12:15 PM   #15
SlicktopTTZ
Captain
SlicktopTTZ's Avatar
United_States
11
Rep
685
Posts

Drives: 91 300ZX Twin-Turbo, 2010 135i
Join Date: Aug 2009
Location: Corpus Christi, Texas

iTrader: (0)

You should actually have LESS pressure drop if it is a good aftermarket intercooler. You turbos should actually have a LOWER cycle duty to hit your desired boost pressure, due to better after-cooling.

Pressurize the system using a boost leak tester, it may not even be those two couplers, and smoke machine puts out a few inches water column, NOT enough to test for BOOST leaks, but good enough for the VACUUM/INTAKE side.

Are you using JB3 or Procede?
Appreciate 0
      08-03-2010, 12:27 PM   #16
Jonny550
Brigadier General
Jonny550's Avatar
198
Rep
4,936
Posts

Drives: 2012 550i Xdrive
Join Date: Feb 2009
Location: Jersey Shore

iTrader: (14)

Quote:
Originally Posted by M335i Oreo Package View Post
Dinan, we did a smoke test...
AAAAnd theirs the problem.
__________________
[SIGPIC][/SIGPIC]

.
Appreciate 0
      08-03-2010, 12:32 PM   #17
Jeff@TopGearSolutions
Jeff@TopGearSolutions's Avatar
United_States
3376
Rep
79,257
Posts

Drives: C6 Z06, 09 335i, 10 335xi
Join Date: Dec 2008
Location: www.TopGearSolutions.com

iTrader: (37)

Quote:
Originally Posted by SlicktopTTZ View Post
You should actually have LESS pressure drop if it is a good aftermarket intercooler. You turbos should actually have a LOWER cycle duty to hit your desired boost pressure, due to better after-cooling.

Pressurize the system using a boost leak tester, it may not even be those two couplers, and smoke machine puts out a few inches water column, NOT enough to test for BOOST leaks, but good enough for the VACUUM/INTAKE side.

Are you using JB3 or Procede?
Tru, and hes using Dinan I already asked.

So
Appreciate 0
      08-03-2010, 12:39 PM   #18
cn555ic
cn555ic's Avatar
United_States
405
Rep
18,331
Posts

Drives: 335i
Join Date: Jun 2007
Location: US

iTrader: (6)

Send a message via Yahoo to cn555ic
Defintely not normal....I only saw .5 drop after I installed my HPF intercooler...If your seeing 5 psi like others have stated there is something leaking and not connected...Take the intercooler apart and re-install to check where the problem is...
Appreciate 0
      08-03-2010, 01:12 PM   #19
Sniz
Lieutenant General
Sniz's Avatar
532
Rep
10,596
Posts

Drives: e92 335 - gone // e36 M3 turbo
Join Date: Mar 2007
Location: Ellicott City, MD

iTrader: (1)

yes u need to pressurize the system. I made a thread on this years ago.

smoke test wont tell you squat most likely.

Good for finding exhaust leaks though!
__________________
Appreciate 0
      08-03-2010, 02:05 PM   #20
STONEY_M5
MAAD HEAD
STONEY_M5's Avatar
No_Country
55
Rep
1,125
Posts

Drives: 2010 X5M 2013 M5
Join Date: Jan 2010
Location: NYC

iTrader: (4)

Garage List
13 F10 M5  [0.00]
2010 X5M  [0.00]
07 335i  [4.63]
Quote:
Originally Posted by Jon335iFL View Post
AAAAnd theirs the problem.
NOW you tell me what does me having the Dinan tune have anything to do with anything.... Take your time I'll wait.

As for everyone else who is giving me USEFUL information thanks.....

Meanwhile back at rhe ranch, is there a possibility that the intercooler is no good, bcuz I have done just about everything except put back on the old intercooler and see if the problem still exist...

BTW where would I get the tools to do the pressure test since the smoke test is virtually useless in this case????

Again Thanks for all of your help please keep it coming as i need to solve this issue ASAP....
__________________
F10 M5 e70 X5M
Sold E90 335i
Appreciate 0
      08-03-2010, 02:18 PM   #21
STONEY_M5
MAAD HEAD
STONEY_M5's Avatar
No_Country
55
Rep
1,125
Posts

Drives: 2010 X5M 2013 M5
Join Date: Jan 2010
Location: NYC

iTrader: (4)

Garage List
13 F10 M5  [0.00]
2010 X5M  [0.00]
07 335i  [4.63]
Quote:
Originally Posted by 02themax View Post
I would recheck every single coupler from the intake to the IC and back to the engine. if all is tight then you're fine.
fine even tho the psi dropped so low, i was gonna run a boost guage from the hot side of the ic and see the psi difference from there to the manifold

Quote:
Originally Posted by SlicktopTTZ View Post
You should actually have LESS pressure drop if it is a good aftermarket intercooler. You turbos should actually have a LOWER cycle duty to hit your desired boost pressure, due to better after-cooling.

Pressurize the system using a boost leak tester, it may not even be those two couplers, and smoke machine puts out a few inches water column, NOT enough to test for BOOST leaks, but good enough for the VACUUM/INTAKE side.

Are you using JB3 or Procede?
it the turbonetics/spearco/code 3/dinan ic

Quote:
Originally Posted by Sniz View Post
yes u need to pressurize the system. I made a thread on this years ago.

smoke test wont tell you squat most likely.

Good for finding exhaust leaks though!
Could you send me the link to thread...
__________________
F10 M5 e70 X5M
Sold E90 335i
Appreciate 0
      08-03-2010, 03:28 PM   #22
RoundelM3
Major General
RoundelM3's Avatar
United_States
1436
Rep
6,613
Posts

Drives: 15 M3 Sedan, 16 228i Cabrio
Join Date: Apr 2010
Location: Wendell, NC

iTrader: (2)

Garage List
2015 BMW M3  [0.00]
2016 BMW 228i  [3.00]
So do some "regression testing"...put your stock intercooler back on and if the boost is where it should be, then the problem is definitely in the new unit. It might even be a leak in the intercooler itself, not just a coupling. Also, try using something else to measure your boost psi just to be sure you're not getting a false reading.

And...if all else fails, call the Dinan guys and tell them what's going on - see if they have any insights as to what would cause the reduction in pressure. After all, they make an FMIC as well, and it is matched up with their Stage 3 software. Could be something in that stage that allows for the extra capacity in the larger intercooler. Lots of possibilities, so try things one at a time until you hit on a cause/solution.
__________________

2015 F80 ///M3 Sedan 7DCT Tanzanite, 2016 228i M-Sport Cabrio 8AT Melbourne
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off



All times are GMT -5. The time now is 08:40 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST