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Old 02-14-2004, 10:48 PM   #1
KJR
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Default vf28?? opinions/info(flow charts, hp)

any info on this turbo with stock or upgraded fueling? i can only find basic info on this. any help would be appreciated. thanks,
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Old 02-15-2004, 01:30 AM   #2
west
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Basically vf24, I understand it comes in at2900 rpm or less with proper mods. It has limited boost pressure abilities but I am concidering one of thes for my wifes wrx if not a vf 30.
look up deadbolt and give them a call, mabe they can help.
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Old 02-15-2004, 06:03 AM   #3
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Go with a more common vf, like a 30,34 of if you want more up top a 24,22.... It will be easyer to get off the shelf maps for it, say from cobb.

You should be able to run the turbo at lower then stock boost with the stock system. There was a thread on the vf22 with a stock setup in factory 2.0 the other day. Check it out....

There is little difference between the vf turbos....
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Old 02-15-2004, 10:35 AM   #4
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thanks guys. i am planning on a custom tune with my Unichip but i can't find info on peak HP and max boost levels. i am considering this turbo because i may be able to get one for fairly cheap.
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Old 02-15-2004, 04:54 PM   #5
WS6toWRX
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also the stock vs VF turbos put out different CFMs at the same psi. FOr example the stock turbo flows less air(CFM) at 15psi than the vf22 does at 15psi. I dont know exactly the difference, but i didnt see it mentioned and thought id throw it in just in case it might be helpful. so if you run a vf34 at 14psi, its putting out more air than the stock turob as 16psi.
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Old 02-15-2004, 06:35 PM   #6
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yeah, i am aware of that. if it weren't the case we all would have to throw 30-40 psi of boost at the motor
i also plan on upgrading the fueling. however, i am only looking to run around 20 psi with a turbo that has more in the area of midrange power rather than a top end drag turbo. i want something that will fully spool by 3500 rpm and i rarely ever redline this car so power above 6K rpm is not essential. thanks,
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Old 02-16-2004, 06:44 AM   #7
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Quote:
Originally posted by KJR
yeah, i am aware of that. if it weren't the case we all would have to throw 30-40 psi of boost at the motor
i also plan on upgrading the fueling. however, i am only looking to run around 20 psi with a turbo that has more in the area of midrange power rather than a top end drag turbo. i want something that will fully spool by 3500 rpm and i rarely ever redline this car so power above 6K rpm is not essential. thanks,
30/34 or one of the deadbolt monsters...

check out this thread.

http://forums.nasioc.com/forums/show...50#post5243250
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Old 02-16-2004, 09:10 AM   #8
KJR
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thanks for those graphs! i was very suprised to see the VF30 keeping up with the PE1818 so closely. perhaps a 34 will do....
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