Welcome to the North American Subaru Impreza Owners Club Wednesday November 26, 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 > Proven Power Bragging

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 01-17-2013, 09:27 PM   #1
OmegaNine
Scooby Newbie
 
Member#: 274783
Join Date: Feb 2011
Chapter/Region: TXIC
Location: ATX
Vehicle:
2006 WRX
CGM

Default VF39 Swap Dyno Results...Feedback?

So I just installed the following in my 2006 WRX:

PnP VF39
Invidia DP & Catback
Turbo XS TMIC
Cobb SF Intake
Grimspeed 3-port EBCS
Walbro 255 fuel pump
ACT Streetlite flywheel
OEM Exedy Clutch

Car put down 262 whp & 285 wtq @16.5 PSI

Are these decent numbers for a Mustang Dyno? I was really expecting more but was told this was really good.

Also, I'm feeling much more lag than my TD04, way more than I was expecting. It feels like it goes no where until 3500 RPM. In high gears at low speed I used to actually move now it just hangs for awhile until boost builds up.

I'm also getting a crazy fluttering (wastegate or BPV?) sound under load in gears 3-5, and was told by my tuner it was my BPV but it definitely sounds like its coming from the turbo side.

Any feedback from guys with similar mods? I don't have any other resources to compare and would appreciate it, thanks!
* Registered users of the site do not see these ads.
OmegaNine is offline   Reply With Quote
Old 01-17-2013, 10:26 PM   #2
STI_GUY_06
Scooby Newbie
 
Member#: 250750
Join Date: Jun 2010
Chapter/Region: NWIC
Location: washington
Vehicle:
2006 sti
black

Default

Off topic, but why didn't you crank up the boost?
STI_GUY_06 is offline   Reply With Quote
Old 01-17-2013, 10:57 PM   #3
OmegaNine
Scooby Newbie
 
Member#: 274783
Join Date: Feb 2011
Chapter/Region: TXIC
Location: ATX
Vehicle:
2006 WRX
CGM

Default

Quote:
Originally Posted by STI_GUY_06 View Post
Off topic, but why didn't you crank up the boost?
Not sure, I put all the stuff on, took it to my tuner and said "make this fast and run good".

Logged boost on the AP today, was hitting about 16-17 psi consistently. Should I be hitting a higher target?
OmegaNine is offline   Reply With Quote
Old 01-17-2013, 11:05 PM   #4
drewvdw
Scooby Guru
 
Member#: 255776
Join Date: Aug 2010
Chapter/Region: MWSOC
Location: Laramie, WY
Vehicle:
2010 LR WRX
MPS powered.

Default

Seems pretty good, I probably wouldn't want much more power on your tranny. Don't sweat the number, it's on a Mustang dyno, they typically read lower than average. My guess is that it's perfectly fine. As for the fluttering sound, I'd trust your tuner, or if you need more confirmation, take him for a quick test ride.
drewvdw is online now   Reply With Quote
Old 01-17-2013, 11:22 PM   #5
OmegaNine
Scooby Newbie
 
Member#: 274783
Join Date: Feb 2011
Chapter/Region: TXIC
Location: ATX
Vehicle:
2006 WRX
CGM

Default

Quote:
Originally Posted by drewvdw View Post
Seems pretty good, I probably wouldn't want much more power on your tranny. Don't sweat the number, it's on a Mustang dyno, they typically read lower than average. My guess is that it's perfectly fine. As for the fluttering sound, I'd trust your tuner, or if you need more confirmation, take him for a quick test ride.
Thanks, I needed the reassuring feedback haha.
OmegaNine is offline   Reply With Quote
Old 01-17-2013, 11:39 PM   #6
BlazeRex
Scooby Specialist
 
Member#: 268354
Join Date: Dec 2010
Chapter/Region: NESIC
Location: Massachusetts
Vehicle:
02 WRX 05 LGT
Slow Automatics

Default

Numbers are average. I wouldnt worry.
BlazeRex is offline   Reply With Quote
Old 01-17-2013, 11:46 PM   #7
Slimsti
Scooby Specialist
 
Member#: 155696
Join Date: Aug 2007
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2007 BLK STI Dom3XTR
415/405 Precision Tuning

Default

Seems good if its on a true mustang. My buddies 04 with fmic,ewg and header and 21psi only made 280/260 on a mustang
Slimsti is offline   Reply With Quote
Old 01-18-2013, 12:59 AM   #8
BoostHard
Scooby Newbie
 
Member#: 235550
Join Date: Jan 2010
Chapter/Region: RMIC
Location: Colorado Springs, Colorado
Vehicle:
2007 WRX TR
OBP

Default

The lag and revs hanging could be caused by your lighter flywheel. I'm on an evo3 big 16g and at a full 19.3psi by 3000rpm, it builds boost fast and early so there's plenty of low end grunt.
BoostHard is offline   Reply With Quote
Old 01-18-2013, 09:21 AM   #9
NoGraffix
Scooby Specialist
 
Member#: 276209
Join Date: Mar 2011
Chapter/Region: MWSOC
Location: Windy City
Vehicle:
I am Rub
Function>Form

Default

Quote:
Originally Posted by OmegaNine View Post
So I just installed the following in my 2006 WRX:

PnP VF39 (I PnPed mine and ended up causing it to spool a little later)
Invidia DP & Catback
Turbo XS TMIC
Cobb SF Intake
Grimspeed 3-port EBCS
Walbro 255 fuel pump
ACT Streetlite flywheel
OEM Exedy Clutch

Car put down 262 whp & 285 wtq @ 16.5 PSI

Are these decent numbers for a Mustang Dyno? I was really expecting more but was told this was really good.

Also, I'm feeling much more lag than my TD04 (The VF39 is a larger turbo and will hit peak boost later. I'd expect to hit 16.5psi by 3300-3500), way more than I was expecting. It feels like it goes no where until 3500 RPM. In high gears at low speed (You don't want to be going WOT in high gears at low speeds, it will likely cause over boost. Time to down shift ) I used to actually move now it just hangs for awhile until boost builds up.

I'm also getting a crazy fluttering (wastegate or BPV?) (If you are under throtle the BPV wont make any noises unless it's leaking so it's likely the IWG. Your tuner might want to dial in the WGDC and TD tables a bit better) sound under load in gears 3-5, and was told by my tuner it was my BPV (who is your tuner?) but it definitely sounds like its coming from the turbo side.

Any feedback from guys with similar mods? I don't have any other resources to compare and would appreciate it, thanks!


Your numbers sound about average. For reference my VF39 (08 WRX so also a 2.5L) on e85 put down 315/363 on my local mustang dyno, but I also have an EWG and have pushed my tune pretty far. For the pressure you're pushing 260ish seems very reasonable. If you could upload a log I could run a virtual dyno or an airboy on the data, at least your numbers wil be comparable to anyone else that uses that software. The only thing that concerns me is that your tuner doesn't know the difference between the waste gate fluttering under load and the BPV .
NoGraffix is offline   Reply With Quote
Old 01-18-2013, 12:36 PM   #10
Dave D.
NASIOC Supporter
 
Member#: 130990
Join Date: Nov 2006
Chapter/Region: NWIC
Location: Menzel Lake, WA
Vehicle:
06 Red Ltd.Wagon
20g-xtr 410/395 JJtuned

Default

Those are good numbers imo. My VF39 setup put down 260/290 on a Mustang -- the identical setup did 295/350 on a Dynocom. Psi was about the same.

But mine definitely boosted sooner and didn't flutter.
Dave D. is offline   Reply With Quote
Old 01-18-2013, 12:47 PM   #11
07VTRex
Scooby Specialist
 
Member#: 179023
Join Date: May 2008
Chapter/Region: MAIC
Location: Virginia
Vehicle:
07 CGM WRX TR
Dom 1.5xtr + PPG's

Default

the numbers are fine. you need to learn how to drive your car. full boost by 3500 is not late at all. if your complaining about that lag now dont ever consider upgrading turbos, its only going to get worse.

if you want to use your power, then downshift. putting high load on these engines at low rpm is not good. you need to downshift more, and stay in your powerband if you want to use your powerband ( as in be in the right rpm range for the type of driving you want to do)

for the record i was seeing full boost anywhere between 3000-3300 rpms on my 2.5l with my old vf39, and then by 5500rpms it falls flat on its face, no more pull
07VTRex is online now   Reply With Quote
Old 01-18-2013, 01:37 PM   #12
scoobasaurusrex
Scooby Specialist
 
Member#: 255114
Join Date: Aug 2010
Chapter/Region: Tri-State
Vehicle:
2007 wrb wrx wagon
93oct vf43 ewg

Default

07 WRX - Stock tans., clutch, engine internals, etc.

VF43, ID1000's, Walbro 255lph, GrimmSpeed ewg up-pipe w/ TiAL 44mm ewg, Invidia 3" catless N1 Race, 2010 STi tmic, COBB SF intake w/ box, and a few other small things and I made 294awhp / 316awtq @ 20lbs. on a Mustang dyno.

Getting tuned for e85 this summer, can't wait to see the numbers for that

My turbo isn't PnP'd and I see peak peak boost between 3-3.5k, so it sounds about right there. Oh and by the way, don't listen to what people tell you about your trans. Obviously, increased power is directly correlated to increased probability of failure, but as long as you don't drive like a retard (5-6 grand launches, no-lift shifts, ripping on the thing everywhere you go) your trans. isn't going to just grenade.
scoobasaurusrex is offline   Reply With Quote
Old 01-18-2013, 05:09 PM   #13
OmegaNine
Scooby Newbie
 
Member#: 274783
Join Date: Feb 2011
Chapter/Region: TXIC
Location: ATX
Vehicle:
2006 WRX
CGM

Default

Quote:
Originally Posted by 07VTRex View Post
if you want to use your power, then downshift. putting high load on these engines at low rpm is not good. you need to downshift more, and stay in your powerband if you want to use your powerband ( as in be in the right rpm range for the type of driving you want to do)
Yeah, downshifting will obviously be the solution to that, I was just curious if that is normal behavior since its a night and day difference in high gears compared to my TD04. I could be in 5th cruising at 60 and just punch it and it would take a sec but would go. Now there is no way I can do that, I have to downshift to 4th, sometimes even 3rd to get moving.

I will note though that despite the noise/lag issues, it does pull VERY strong in gears 1-3

Thanks for all the feedback guys. Don't have any other car enthusiast friends, let alone Suby guys.
OmegaNine is offline   Reply With Quote
Old 01-18-2013, 07:26 PM   #14
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

I have a 2006 wagon

Vf39
Spearco tmic
Stock injectors block and trans
Grimmspeed Ebcs
Wally 255
Invidia dp to a Cobb replica

18psi

283/323 on a virtual Dyno with a super conservative tune. Peek power is at 5,500 and holds to redline.

Peek boost 3,200-3,500



Seems right.
rymaggi is offline   Reply With Quote
Old 01-18-2013, 08:13 PM   #15
Mike05wrx
Scooby Newbie
 
Member#: 314747
Join Date: Mar 2012
Location: Long Island, NY
Vehicle:
2005 WRX

Default

I have a similar setup.

2005 WRX
vf39
sti pinks
sti I/C
Perrin intake
Grimmspeed EBCS
Walbro FP
Tial 38mm EWG
Invidia Catless DP
SRS Exhaust


Made 292whp 294wtq at 19.5 psi on a Mustang Dyno

def lags a bit more than the td04, for obvious reasons. i hit full boost in 2nd at about 3300ish rpm
Mike05wrx is offline   Reply With Quote
Old 01-18-2013, 08:14 PM   #16
Mike05wrx
Scooby Newbie
 
Member#: 314747
Join Date: Mar 2012
Location: Long Island, NY
Vehicle:
2005 WRX

Default

and the fluttering is probably your EBCS. My ewg flutters like crazy at wot cause of it
Mike05wrx is offline   Reply With Quote
Old 01-18-2013, 08:28 PM   #17
rymaggi
Scooby Specialist
 
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
Vehicle:
2006 V7 Sti 6speed
Built motor 20g // 446whp

Default

Quote:
Originally Posted by Mike05wrx View Post
and the fluttering is probably your EBCS. My ewg flutters like crazy at wot cause of it
Yea I agree, mostly likely it's the Ebcs maintaining boost.

Edit* but usually u can only hear the flutter through an EWG. I don't hear any flutter on mine.

Last edited by rymaggi; 01-18-2013 at 09:05 PM.
rymaggi is offline   Reply With Quote
Old 01-18-2013, 09:15 PM   #18
ProfessWRX
Scooby Specialist
 
Member#: 323379
Join Date: Jun 2012
Vehicle:
06 WRX

Default

3500 is horribly high for spool. My vf30 spools below 3000 rpm.
ProfessWRX is offline   Reply With Quote
Old 01-19-2013, 12:48 PM   #19
BlazeRex
Scooby Specialist
 
Member#: 268354
Join Date: Dec 2010
Chapter/Region: NESIC
Location: Massachusetts
Vehicle:
02 WRX 05 LGT
Slow Automatics

Default

Actually 3500rpm for 16psi is slow spool for 3rd gear on a 2.5 liter avcs car. 18psi around 3100 is usual.
BlazeRex is offline   Reply With Quote
Old 01-19-2013, 01:47 PM   #20
Android287
Scooby Newbie
 
Member#: 180861
Join Date: May 2008
Location: Mass
Vehicle:
2005 cammed Hybrid
2.5xtr E85

Default

this is on a 06 wrx not a 2.0. For 16psi spool is slow for 3500.
Android287 is offline   Reply With Quote
Old 01-22-2013, 10:24 PM   #21
coalslaw
Scooby Specialist
 
Member#: 324808
Join Date: Jul 2012
Chapter/Region: E. Canada
Location: Toronto, canada
Vehicle:
2006 IWL Stg2
OBP

Default

manual boost controller should solve the fluttering or hybrid elec. boost controller
coalslaw is offline   Reply With Quote
Old 01-22-2013, 11:00 PM   #22
BlazeRex
Scooby Specialist
 
Member#: 268354
Join Date: Dec 2010
Chapter/Region: NESIC
Location: Massachusetts
Vehicle:
02 WRX 05 LGT
Slow Automatics

Default

Quote:
Originally Posted by coalslaw View Post
manual boost controller should solve the fluttering or hybrid elec. boost controller
Not alwayz, depends on the fluttering noise. There is some natural turbo flutter. But most likely it will quiet it down.
BlazeRex is offline   Reply With Quote
Old 01-22-2013, 11:09 PM   #23
bl0wnb0xerbabiE
Scooby Newbie
 
Member#: 121722
Join Date: Aug 2006
Chapter/Region: BAIC
Vehicle:
2006 Impreza WRX tr
Obsidian Black

Default

subscribing.
bl0wnb0xerbabiE is offline   Reply With Quote
Old 01-22-2013, 11:34 PM   #24
Slimsti
Scooby Specialist
 
Member#: 155696
Join Date: Aug 2007
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2007 BLK STI Dom3XTR
415/405 Precision Tuning

Default

Get a boost leak test. Sounds like u have a leak somewhere or your having an issue with ur bpv. Does it sound like a supercharger when u go wot?
Slimsti is offline   Reply With Quote
Old 01-22-2013, 11:50 PM   #25
thatderekguy
Scooby Newbie
 
Member#: 301501
Join Date: Nov 2011
Location: West virginia
Vehicle:
2002 WRX
black

Default

I wish I had the numbers you guys are putting down lol

Stock 2.0 block,trans
Vf39
650cc injectors
Cobb intake
Catless up, and dp
3inch Catless n1 exhaust
Exedy clutch
240whp/217 tq..

Will have a 255 fuel pump and aftermarket tmic when I have the money for a retune.
thatderekguy 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


All times are GMT -4. The time now is 11:10 AM.


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.