what is the max boost on a vf39?

Arts · 03-31-2007, 05:25 PM

hey guys I have a 03 wrx with a vf39 and other supporting mods... I wanted to know... what is the max boost on a vf39???

??

* Registered users of the site do not see these ads.

AlboWRX · 03-31-2007, 09:04 PM

You got that right!

Master2192 · 03-31-2007, 11:16 PM

The VF39 can get up to about 21-22 psi of boost but that is as far as it will go. This will depend on the pressure drop across your intercooler however.

prometheum · 03-31-2007, 11:30 PM

weld the wastegate shut and tell us; i'd say about 50 psi

NewGwrx · 04-01-2007, 12:36 AM

im running 21 on my vf34...i know they arent the same turbo though, and not sure if will help with info on the 39 but its worth a shot

fastwrx05 · 04-01-2007, 09:48 AM

really it's gonna depend on your tune, but probably in the low 20's on most setups, higher if your running water/meth.

Arts · 04-01-2007, 10:22 PM

i HEARD OF SOME BOOSTING UP TO 25 PSI ON C16 VP FUELS... U THINK IT COULD BE DONE?

WRXDriftR · 04-02-2007, 12:14 AM

^clever use of the caps lock

WolfInSheepsCLothing · 04-02-2007, 12:28 AM

i'd say low 20's, above that and the turbo won't last long..

2_Liter_EJTurbo · 04-02-2007, 12:42 AM

Quote:

Originally Posted by Master2192

The VF39 can get up to about 21-22 psi of boost but that is as far as it will go. This will depend on the pressure drop across your intercooler however.

Thats about right

MRF582 · 04-02-2007, 03:32 AM

My VF39 usually runs at about 1.7bar. I have gotten it to hit 2.0bar when ambient temps were around 25F. But for everyday street driving I set the boost to 25psi. This is on straight 93 octane.

Of course this is in the low to mid range. At high rpms it has trouble holding more than 19psi at 45F and about 18psi at 75F.

mlovro32 · 04-02-2007, 10:01 AM

Low 20's with a proper tune sounds about right.

Arts · 04-03-2007, 12:19 AM

how many hp's can I make with this 21-22psi?

2ndGearFling · 04-03-2007, 12:27 AM

As many hp's as you want. LOL......what does it say under your user name besides Scooby?

lancelucas · 04-03-2007, 01:09 AM

Quote:

Originally Posted by Arts

how many hp's can I make with this 21-22psi?

300/300 should be attainable on high octane or water/meth.

I'm using a VF39/FMIC on 92 pump and run 19psi through peak, tapering to 17psi at redline. I've pushed it as far as 24->18 on high octane (100+).

Quote:

Originally Posted by 2ndGearFling

As many hp's as you want. LOL......what does it say under your user name besides Scooby?

From the guy who started this thread

http://forums.nasioc.com/forums/showthread.php?t=972189

canucme · 04-03-2007, 03:24 AM

Quote:

Originally Posted by WolfInSheepsCLothing

i'd say low 20's, above that and the turbo won't last long..

yeah cause i was runnin 21 psi on third and 24 on 4th and 5th and guess what?? i blew the turbo kinda. rite now my turbo wont boost past 10 and when it does it drops below 0 and major power loss. but before that it was runnin like a champ. i hit 260whp and 280 tqe w/o meth or alk inj so to put it on safe grounds go under 21. now im getting a evo3 16g im still waiting for to come. good luck

AlucardR · 04-03-2007, 05:18 AM

Quote:

Originally Posted by prometheum

weld the wastegate shut and tell us; i'd say about 50 psi

... I'd like to see someone try that just to see what they'd run. Their engine would probably blow up before making it down the track once.. You never know though..i've seen stock Civic engines take huge shots of Nitrous and still pull a few times before dying.

03-31-2007, 05:25 PM	#1
Arts Scooby Newbie Member#: 140335 Join Date: Feb 2007 Chapter/Region: PRSIC Location: PueRtO RicO Vehicle: 2003 03 WrX Aspen White	what is the max boost on a vf39? hey guys I have a 03 wrx with a vf39 and other supporting mods... I wanted to know... what is the max boost on a vf39??? ?? * Registered users of the site do not see these ads.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
What is the max boost for the VF48?	Tuned200	Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo)	14	02-17-2009 04:59 PM
AP V.1, What is the max boost psi it will read?	Bruce Wayne	AccessPort	2	01-10-2008 11:28 PM
what is the max boost for the sti	4 banger	Tri-State Area Forum	1	09-23-2003 07:24 PM
what is the max boost the sti can hold	4 banger	Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo)	7	09-22-2003 11:44 PM
What is the MAX boost for a VF30	fatray	Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo)	5	07-16-2003 02:21 PM

03-31-2007, 09:04 PM	#2
AlboWRX Scooby Specialist Member#: 37719 Join Date: Jun 2003 Chapter/Region: MWSOC Vehicle: 2003 WRX	You got that right!

03-31-2007, 11:16 PM	#3
Master2192 RIP 10/12/83 to 02/10/08 Scooby Specialist Member#: 83254 Join Date: Mar 2005 Chapter/Region: NWIC Location: Roy, Washington Vehicle: 98 2.5 RS 04 WRX	The VF39 can get up to about 21-22 psi of boost but that is as far as it will go. This will depend on the pressure drop across your intercooler however.

03-31-2007, 11:30 PM	#4
prometheum Scooby Specialist Member#: 92003 Join Date: Jul 2005 Chapter/Region: SCIC Location: Tatooine Vehicle: 04 bicycle!	weld the wastegate shut and tell us; i'd say about 50 psi

04-01-2007, 12:36 AM	#5
NewGwrx Scooby Specialist Member#: 103645 Join Date: Dec 2005 Chapter/Region: NESIC Location: Waltham Ma Vehicle: 2011 Subaru Legacy White	im running 21 on my vf34...i know they arent the same turbo though, and not sure if will help with info on the 39 but its worth a shot

04-01-2007, 09:48 AM	#6
fastwrx05 Scooby Newbie Member#: 94131 Join Date: Aug 2005 Chapter/Region: MAIC Location: Roanoke, Va Vehicle: 08' SRT Caliber Hard to keep clean black!	really it's gonna depend on your tune, but probably in the low 20's on most setups, higher if your running water/meth.

04-01-2007, 10:22 PM	#7
Arts Scooby Newbie Member#: 140335 Join Date: Feb 2007 Chapter/Region: PRSIC Location: PueRtO RicO Vehicle: 2003 03 WrX Aspen White	i HEARD OF SOME BOOSTING UP TO 25 PSI ON C16 VP FUELS... U THINK IT COULD BE DONE?

04-02-2007, 12:14 AM	#8
WRXDriftR Scooby Guru Member#: 65065 Join Date: Jun 2004 Chapter/Region: Tri-State Location: NJ Vehicle: 2004 EJ205 STi 2007 Forester STi	^clever use of the caps lock

04-02-2007, 12:28 AM	#9
WolfInSheepsCLothing Scooby Newbie Member#: 61197 Join Date: May 2004 Location: Anaheim, CA Vehicle: 2004 WRX vf39 + goodies...	i'd say low 20's, above that and the turbo won't last long..

04-02-2007, 03:32 AM	#11
MRF582 Scooby Guru Member#: 48219 Join Date: Nov 2003 Chapter/Region: MAIC Location: Pittsburgh, PA Vehicle: . Always drive the race line .	My VF39 usually runs at about 1.7bar. I have gotten it to hit 2.0bar when ambient temps were around 25F. But for everyday street driving I set the boost to 25psi. This is on straight 93 octane. Of course this is in the low to mid range. At high rpms it has trouble holding more than 19psi at 45F and about 18psi at 75F.

04-02-2007, 10:01 AM	#12
mlovro32 Scooby Newbie Member#: 85990 Join Date: Apr 2005 Chapter/Region: MWSOC Location: Dekalb, IL Vehicle: 2003 WRX 240hp/240tq WRB	Low 20's with a proper tune sounds about right.

04-03-2007, 12:19 AM	#13
Arts Scooby Newbie Member#: 140335 Join Date: Feb 2007 Chapter/Region: PRSIC Location: PueRtO RicO Vehicle: 2003 03 WrX Aspen White	how many hp's can I make with this 21-22psi?

04-03-2007, 12:27 AM	#14
2ndGearFling Scooby Specialist Member#: 64466 Join Date: Jun 2004 Chapter/Region: MWSOC Location: Grand Rapids, MI Vehicle: 05, STI on green	As many hp's as you want. LOL......what does it say under your user name besides Scooby?