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Old 06-05-2004, 03:32 PM   #1
03WRX83
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Default Max boost on vf30

Could someone tell me what the max boost i can run on a vf30 is?
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Old 06-05-2004, 03:39 PM   #2
Uncle Scotty
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That is a question with NO real answer.

With WHAT for mods?
What EM?
What fuel?
For what purpose will this vehicle be used?

The VF30 will put out plenty of PSI....
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Old 06-05-2004, 04:18 PM   #3
03WRX83
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vf30, sti pinks, turbo back catless system uppipe..fp, and cobb tunning, im just wondering what its max potential can be...
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Old 06-05-2004, 04:36 PM   #4
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If you have "Cobb tuning" then I guess it's up to them.
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Old 06-05-2004, 11:55 PM   #5
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Quote:
Originally posted by Uncle Scotty
If you have "Cobb tuning" then I guess it's up to them.
true true
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Old 06-06-2004, 12:20 AM   #6
InfamousDX
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How's your Stage 2.5 treating you man??? Sorry to jump off topic.
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Old 06-06-2004, 01:10 AM   #7
berzerkled
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i have a vf34 with the same setup and hit 19 psi and stay there (no peak )
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Old 06-06-2004, 02:23 AM   #8
MJU1983
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Seems that on the top end vf30s like to taper to 16-17 max psi.
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Old 06-06-2004, 03:33 AM   #9
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The most I would run on pump gas is 18psi. On C16 I run 23 but it tapers to 18 by redline.
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Old 06-06-2004, 05:12 AM   #10
Big Turkey
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I ran 24psi of boost and tapered down to 21psi on C16.. that was had some crazy amounts of torque.
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Old 06-06-2004, 10:07 AM   #11
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Quote:
Originally posted by MJU1983
Seems that on the top end vf30s like to taper to 16-17 max psi.
That is what mine does anyways
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Old 06-06-2004, 10:48 AM   #12
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mine was tuned to 18-18.5 on pump and 22.5 on C16
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Old 04-03-2021, 03:16 PM   #13
Kestrel416
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Quote:
Originally Posted by 03WRX83 View Post
Could someone tell me what the max boost i can run on a vf30 is?
On 94 octane my EJ207, with pinks and VF30 peaks at 19.8 psi and holds that to redline, which was reduced to 7200 rpm due to maxed out injectors. I'm installing a Walbro 255 and Aeromotive FRP (plan to run + 0.5 bar fuel pressure) and water meth injection and hope to hit 22-24 psi, with a goal for 275+ lb/ft of torque.
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Old 04-04-2021, 10:21 AM   #14
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Quote:
Originally Posted by Kestrel416 View Post
On 94 octane my EJ207, with pinks and VF30 peaks at 19.8 psi and holds that to redline, which was reduced to 7200 rpm due to maxed out injectors. I'm installing a Walbro 255 and Aeromotive FRP (plan to run + 0.5 bar fuel pressure) and water meth injection and hope to hit 22-24 psi, with a goal for 275+ lb/ft of torque.
Psst, this thread is over 15 years old.
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Old 04-29-2021, 12:03 AM   #15
Zurq94
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Default I just bought vf30

So what is max boost with his mods and what do you guys think that’d put to the wheels ?
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Old 05-18-2021, 06:23 PM   #16
Kestrel416
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Quote:
Originally Posted by Zurq94 View Post
So what is max boost with his mods and what do you guys think that’d put to the wheels ?
There are are numerous posts on here with people making more than 300 who with VF30, which seems strange since it's rated for 33-36 lb/min of airflow which is roughly 350-370 hp at the crank. Peel off drivetrain losses and you barely scratch 300 whp. Maybe some turbos are capable of high pressure ratios (good wheel housing match), but the turbines some say are flow limited, so not sure how to push the compressor that hard.
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Old 05-18-2021, 07:14 PM   #17
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Quote:
Originally Posted by Zurq94 View Post
So what is max boost with his mods and what do you guys think that’d put to the wheels ?


Max boost is really subjective to your car, your mods, your fuel, your tune, your environmental aspects (elevations for instance) and a crap ton of other things. Figure somewhere between 15-20psi depending on all the factors and more listed
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