Welcome to the North American Subaru Impreza Owners Club Thursday August 28, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC General > Newbies & FAQs

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, 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 free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 11-09-2008, 04:58 PM   #1
ksavage523
Scooby Newbie
 
Member#: 192928
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Clinton
Vehicle:
2006 wrx ltd
wrb

Default Ticking or fluttering when press gas????

I just put a new DP on and went stage 2 ( actually a local shop put the DP on). I re flashed the software with the AP stage 2 91 oct. I have this weird fluttering sound from the right sid of my engine. It is hard to pinpoint because when the car is in neutral and I rev it it does not happen only when I am driving. this did not happen when I had my stage 1 flash wuth just my catback. does any one have any idea? oh and it is a 2006 wrx and my boost seems to peak at about 14.5 (according to the AP). Thanks
* Registered users of the site do not see these ads.
ksavage523 is offline   Reply With Quote
Old 11-09-2008, 05:29 PM   #2
ponamy
Scooby Specialist
 
Member#: 115511
Join Date: May 2006
Chapter/Region: AKIC
Location: Fairbanks, Alaska
Vehicle:
2005 wrx /w babyseat
2011 Forester 2.5x

Default

sounds like your wastegate is fluttering. also i believe the stage 2 should peak closer to 16 or 17lbs of boost
ponamy is offline   Reply With Quote
Old 11-09-2008, 05:32 PM   #3
ksavage523
Scooby Newbie
 
Member#: 192928
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Clinton
Vehicle:
2006 wrx ltd
wrb

Default

is the wastegate fluttering going to damamage anything? should I disconnect my battery and reset the ecu and then re flash it with the stage 2?
ksavage523 is offline   Reply With Quote
Old 11-09-2008, 05:33 PM   #4
Miercoles Cansado
Scooby Specialist
 
Member#: 166820
Join Date: Dec 2007
Chapter/Region: International
Location: say halo to
Vehicle:
my ignore list

Default

Is it ticking or fluttering? Could be two different things. Fluttering may be your wastegate, ticking could be your boost solenoid. Did the shop that did your upgrade use a aftermarket boost solenoid?
Miercoles Cansado is offline   Reply With Quote
Old 11-09-2008, 05:42 PM   #5
ksavage523
Scooby Newbie
 
Member#: 192928
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Clinton
Vehicle:
2006 wrx ltd
wrb

Default

stock solenoid I think?? they just put the DP on.
ksavage523 is offline   Reply With Quote
Old 11-09-2008, 05:43 PM   #6
ksavage523
Scooby Newbie
 
Member#: 192928
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Clinton
Vehicle:
2006 wrx ltd
wrb

Default

it almost sounds like when a kid puts a card on their spoke on a bicycle. it happens between 2500 3500 rpm
ksavage523 is offline   Reply With Quote
Old 11-09-2008, 05:47 PM   #7
jbpsti
Scooby Newbie
 
Member#: 192057
Join Date: Oct 2008
Chapter/Region: South East
Location: Gainesville
Vehicle:
04 WRX STI
JBP

Default

Flutter happens when gas is pushed under low rpms.
jbpsti is offline   Reply With Quote
Old 11-09-2008, 05:49 PM   #8
ksavage523
Scooby Newbie
 
Member#: 192928
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Clinton
Vehicle:
2006 wrx ltd
wrb

Default

it is hard to explain its like a th th th th th th th, the car seems to run great.
ksavage523 is offline   Reply With Quote
Old 11-09-2008, 05:52 PM   #9
ksavage523
Scooby Newbie
 
Member#: 192928
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Clinton
Vehicle:
2006 wrx ltd
wrb

Default

yes it only happes between 2200 and 3300 ( just wen out and checked) it idles fine and when I rev it in neutral there no flutter. also when I let off the gas it stops. It only happen at low rpms and when I am on the gas.
ksavage523 is offline   Reply With Quote
Old 11-09-2008, 05:56 PM   #10
|Disso|
Scooby Guru
 
Member#: 155515
Join Date: Aug 2007
Chapter/Region: SCIC
Location: 626
Vehicle:
OBP pignose
hai2u

Default

Yes, I get this too. It's more of a fluttering sound, like leaves rustling around. It happens only when you're lightly or moderately applying throttle mid-RPM range. Thing is, I've ALWAYS gotten this sound, from stock, till now where I'm stage 2.
|Disso| is offline   Reply With Quote
Old 11-09-2008, 05:57 PM   #11
ksavage523
Scooby Newbie
 
Member#: 192928
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Clinton
Vehicle:
2006 wrx ltd
wrb

Default

thanks guys, I do not care about the noise I just wanted to make sure nothing was getting damaged.
ksavage523 is offline   Reply With Quote
Old 11-09-2008, 07:18 PM   #12
sprewellnore
Scooby Newbie
 
Member#: 153007
Join Date: Jul 2007
Chapter/Region: Tri-State
Location: New york city
Vehicle:
2007 WRX sedan
Black vf48

Default

i think the fluttering noise are normal for stage 2,the sounds was like a helicopter underneath my car.but i don't have that noise now after turbo swap and tuned.
sprewellnore is offline   Reply With Quote
Old 11-09-2008, 07:20 PM   #13
Shohin
Scooby Specialist
 
Member#: 170188
Join Date: Jan 2008
Location: Los Angeles, CA
Vehicle:
2013 WRX
WRB

Default

Tis the wastegate . . . I hear it to in the RPM band previously posted.
Shohin is offline   Reply With Quote
Old 11-09-2008, 07:33 PM   #14
Defiant Autospeed
Vendor
 
Member#: 155450
Join Date: Jul 2007
Location: Austin/Beverly 2 of us now!
Vehicle:
2007 FXT
WRB

Default

Quote:
Originally Posted by ksavage523 View Post
is the wastegate fluttering going to damamage anything? should I disconnect my battery and reset the ecu and then re flash it with the stage 2?

Its not going to damage anything because its not a problem. Its the sound of the gasses going past the wastegate flapper as it opens and closes, doing its job regulating boost.

This is a mechanical sound, that you are now hearing because your downpipe is thinner and lets more sound come through to the outside.

When you flash the ECU, it is reset.


As for why your boost is low, that could be a number of things. You need to remember that this is a one size fits all map, so while it will work well on some cars, it will not work well on others. You can try adjusting the wastegate arm, but I usually recommend against this, as you are making a global change to boost, and everything about it will be affected, wastegate boost levels, how fast it spools and such, which makes the off the shelf map an even worse match.

What you need to do is eliminate any mechanical issues, like hoses off/loose and such, then, get a real tune on the car.
Its not going to be a faulty stock boost control solenoid, when those go bad, they just fail totally, leaving you with @7psi. At least 99.9% of the time anyway.


NOW, if you decide you hate the noise, try the WG arm adjustment, some have great results with it. HOWEVER, I highly recommend a tune when you do this. And if you are getting tuned, you may as well do a GM boost control solenoid (or Perrin) while you are at it.

Its just that adjusting the WG, while you can get to your target boost with that (sometimes), it changes how it gets there in such a way that it makes an already not great situation (off the shelf maps work ok, but not amazingly well), a possibly dangerous one.

Last edited by Defiant Autospeed; 11-09-2008 at 07:39 PM.
Defiant Autospeed is offline   Reply With Quote
Old 11-09-2008, 08:17 PM   #15
ksavage523
Scooby Newbie
 
Member#: 192928
Join Date: Oct 2008
Chapter/Region: Tri-State
Location: Clinton
Vehicle:
2006 wrx ltd
wrb

Default

thank you so much
ksavage523 is offline   Reply With Quote
Old 11-09-2008, 08:19 PM   #16
Davenow
Scooby Guru
 
Member#: 23676
Join Date: Aug 2002
Chapter/Region: NESIC
Location: de_dust and Orgrimar
Vehicle:
.

Default

We try
Davenow is offline   Reply With Quote
Old 11-09-2008, 11:34 PM   #17
DoucheAlmighty
Scooby Newbie
 
Member#: 161492
Join Date: Oct 2007
Chapter/Region: RMIC
Location: In the mountains, raft guiding
Vehicle:
2004 dubyarex 220whp
at 6000ft WRB!!!

Default

it could also be an exhaust leak but most likely not if you havnt lost any performance and you hear it in a specific rpm band. However its just a thought, especially after a DP install
DoucheAlmighty is offline   Reply With Quote
Old 11-10-2008, 10:43 AM   #18
AlxSti
Scooby Guru
 
Member#: 94615
Join Date: Aug 2005
Chapter/Region: MAIC
Location: Wilmington, DE
Vehicle:
|'06 STi 341/356|
www.AffinitiBrokerage.com

Default

yep WG flutter is normal to hear with a DP. especially when your reaching max boost. it wont hurt anything.

i used to hear it a lot in my buddied silvia.. sounded like pigeons in the engine bay!
AlxSti is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fluttering sound and gas smell bdon22 Newbies & FAQs 17 07-27-2006 10:51 AM
Does anyone do this when pumping gas or is it just me? XyKo Off-Topic 28 04-23-2006 04:07 PM
Gas pedal creaking when pressing down balajc Service & Maintenance 3 06-23-2005 09:16 AM
flutter when acceleration cann STi Forum Archive 4 08-14-2003 07:33 AM


All times are GMT -4. The time now is 01:04 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.