|
|
|
|
Thread Tools | Display Modes |
04-04-2011, 10:40 AM | #1 |
Scooby Newbie
Member#: 162988
Join Date: Oct 2007
Chapter/Region:
MAIC
Location: Manassas/ Lynchburg
Vehicle:06 06 Sti SM&STU IAG/EvoSchool/Osgiken |
Flutter..??
First off let me say this is not my car it is the best quality video of the exact same issue i am having to the T.
I drive an 06 sti Mods: Invida Divorce Catted downpipe. Intake, cobb pro tune(Ptuning in Northern VA tuned it), fuel pump Issue: I am receiving fludder, I do not believe it is my wastegate and i dont believe it is Compressor surge. Could it be my stock Bypass valve? It all of a sudden started happening. It really starts in 4,5,6 is im at low rpms building boost and mash the throttle "lets say to get around someone one the highway." Now if im in 1,2,3rd gear and mash the throttle from a optimum rpm range it only hits about 15.5-16psi and my daily is tuned to 17.5-18 The vid is a camed wrx but with the same issue im having.
* Registered users of the site do not see these ads.
|
04-04-2011, 11:39 AM | #2 | |
Scooby Guru
Member#: 442
Join Date: Oct 1999
Chapter/Region:
NESIC
Location: RI/SE Mass
Vehicle:17 Imp Spurt 00 S2k |
Quote:
--kC |
|
04-04-2011, 01:43 PM | #3 |
Scooby Newbie
Member#: 162988
Join Date: Oct 2007
Chapter/Region:
MAIC
Location: Manassas/ Lynchburg
Vehicle:06 06 Sti SM&STU IAG/EvoSchool/Osgiken |
trying to see if anyone in the racing community is having the same problem, i autocross heavily
|
04-04-2011, 06:02 PM | #4 |
Former Vendor
Member#: 80524
Join Date: Jan 2005
Location: San Diego
|
maybe we should have a technical sub-forum under motorsports..there is a lot of good info here and its normal that some subaru owners often ask questions here rather than the generic tech forum.
The problem in the video is the wg blowing open. PS: Low rpm / high gear driving, along with steep slopes creates massive load. That's how people blow up motors usually, mostly on cold nights. You shouldn't close onto the throttle at low rpm, gradually give more angle until you feel the turbo spool then more throttle if needed..I'm not saying this will fix your problem, in general, this is a bad habit to start with. |
04-04-2011, 06:48 PM | #5 |
Scooby Specialist
Member#: 225192
Join Date: Sep 2009
Chapter/Region:
South East
Location: Orlando/Tampa - FL
Vehicle:2008 BMW E92 M3 Bat Mobile Black |
Make sure all of your lines are secure under the hood. If they are then it is most likely your stock BPV.
|
04-04-2011, 08:43 PM | #6 |
Scooby Specialist
Member#: 30367
Join Date: Nov 2002
Chapter/Region:
South East
Location: nashville, tn
Vehicle:2005 Legacy GT NASA SE PTB Champ |
I'm gonna say bpv. 272 cams and a vf39 is a kinda odd combo, no?
|
04-04-2011, 09:00 PM | #7 | |
Scooby Newbie
Member#: 162988
Join Date: Oct 2007
Chapter/Region:
MAIC
Location: Manassas/ Lynchburg
Vehicle:06 06 Sti SM&STU IAG/EvoSchool/Osgiken |
Quote:
lol thanks for the input and yes i think we should have a tech forum under motor sports. As for the video thats just some one with the same problem as me. im not camed, but yes i do have a vf39 in my o6 So yall think its the bpv? |
|
04-04-2011, 09:40 PM | #8 |
Scooby Specialist
Member#: 149631
Join Date: May 2007
Chapter/Region:
MAIC
Location: Charlottesville, Va
Vehicle:ST-3 STi 2.3L Evo |
Going with what garageGT said about how this sort of driving produces massive amounts of load, could the high load be causing the turbo to spin so fast that it's out of it's effeciency range and just chopping the air as it comes through the intake?
|
04-04-2011, 10:17 PM | #9 |
Scooby Specialist
Member#: 30367
Join Date: Nov 2002
Chapter/Region:
South East
Location: nashville, tn
Vehicle:2005 Legacy GT NASA SE PTB Champ |
I missed the fact that it wasn't your car in the video. Don't get your smileys all in a wad
|
04-04-2011, 11:16 PM | #10 | |
Scooby Newbie
Member#: 162988
Join Date: Oct 2007
Chapter/Region:
MAIC
Location: Manassas/ Lynchburg
Vehicle:06 06 Sti SM&STU IAG/EvoSchool/Osgiken |
Quote:
its all good lol |
|
04-05-2011, 02:02 AM | #11 |
Scooby Specialist
Member#: 225192
Join Date: Sep 2009
Chapter/Region:
South East
Location: Orlando/Tampa - FL
Vehicle:2008 BMW E92 M3 Bat Mobile Black |
Just go buy a BPV that isn't made of plastic like the OEM one lol. I've got an HKS somethin somethin. Check my profile.
|
04-05-2011, 10:03 AM | #12 |
Scooby Newbie
Member#: 162988
Join Date: Oct 2007
Chapter/Region:
MAIC
Location: Manassas/ Lynchburg
Vehicle:06 06 Sti SM&STU IAG/EvoSchool/Osgiken |
06sti is not made of plastic and i want another oem one i guess..
|
04-05-2011, 10:08 AM | #13 | |
Scooby Specialist
Member#: 149631
Join Date: May 2007
Chapter/Region:
MAIC
Location: Charlottesville, Va
Vehicle:ST-3 STi 2.3L Evo |
Quote:
Are any Subaru bpv's made of plastic? My crushed 04 STi bpv is holding ~25 psi just fine. |
|
04-05-2011, 11:57 AM | #14 |
Scooby Newbie
Member#: 162988
Join Date: Oct 2007
Chapter/Region:
MAIC
Location: Manassas/ Lynchburg
Vehicle:06 06 Sti SM&STU IAG/EvoSchool/Osgiken |
Are any Subaru bpv's made of plastic? My crushed 04 STi bpv is holding ~25 psi just fine.[/quote]
dont think so.. perhaps the newer models are, idk |
04-05-2011, 12:01 PM | #15 |
Former Vendor
Member#: 80524
Join Date: Jan 2005
Location: San Diego
|
I would borrow one from a friend or put a block off plate for a test drive. Cheaper than buying one just in case it's the WG..
|
04-05-2011, 03:29 PM | #16 |
Scooby Newbie
Member#: 162988
Join Date: Oct 2007
Chapter/Region:
MAIC
Location: Manassas/ Lynchburg
Vehicle:06 06 Sti SM&STU IAG/EvoSchool/Osgiken |
|
04-09-2011, 01:10 PM | #17 |
Scooby Guru
Member#: 140163
Join Date: Feb 2007
Chapter/Region:
MAIC
Location: 3MI Racing
Vehicle:03 STi hellaflunctional |
any GD bpv will work, they're all the same. i have one laying around i think. next time you're in the area, give me a shout in fb.
my vote is the wastegate. |
04-09-2011, 02:09 PM | #18 |
Scooby Newbie
Member#: 176116
Join Date: Mar 2008
Chapter/Region:
SCIC
Location: Sacramento
Vehicle:2006 WRX Wagon WRB |
I have this same issue now on my VF43...I run about 20 psi at WOT. It is only when it hits about 18-19 psi that the sound in the video begins.
Not sure...figured it was wastegate flutter....Thoughts? |
04-11-2011, 06:29 AM | #19 |
Scooby Specialist
Member#: 220629
Join Date: Aug 2009
Chapter/Region:
SCIC
Vehicle:2010 White WRX Hatch 2015 White WRX Limited |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Flutter..?? | dwomp24 | Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) | 4 | 04-04-2011 11:57 PM |
Flutter..?? | dwomp24 | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 4 | 04-04-2011 11:55 PM |
wastegate flutter or bov flutter-help!?!? | odin1 | Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) | 5 | 02-08-2004 06:25 PM |
fluttering sound coming from intake after throttle lift? | pbnj9786 | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 18 | 03-21-2002 03:20 PM |
Fluttering sound in the rear bumper? | Daios | Car Audio, Video & Security | 1 | 10-02-2000 01:34 PM |