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Old 06-18-2013, 08:57 PM   #1
CIATexan
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Default Injector question for VF52 on 2002 WRX

Hi all,

I'm about to pull the trigger on doing a vf52 swap on my 2002 wrx, and wanted to get people's opinions on if the set of Dark-blue top feed injectors is enough for this turbo? I've got a set I'd like to use.

I'm looking to keep the power levels modest, not trying to get insane HP, but have a reliable DD. I'm sure running larger injectors is possible, but will the dark blues be good enough to do the trick?

Thanks in advance!

-J
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Old 06-18-2013, 09:51 PM   #2
wrxlaunch
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You do know the vf52 isn't a direct swap right?

Last edited by wrxlaunch; 06-19-2013 at 05:54 AM.
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Old 06-18-2013, 09:57 PM   #3
CIATexan
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Originally Posted by wrxlaunch View Post
You so know the vf52 isn't a direct swap right?
How so? I was under the assumption it pretty much was?
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Old 06-18-2013, 09:59 PM   #4
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Old 06-18-2013, 10:10 PM   #5
CIATexan
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Interesting, all the research I've done so far has been ok. Can anyone else confirm or deny this?

If it isn't a direct bolt in, what needs to be done to run it? I've had this VF52 for several months waiting to put it in.

I've been under the assumption it isn't an issue, and actually have been talking to Cobb Tuning in LA about doing the install and tuning, and they haven't mentioned a THING about incompatibility.
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Old 06-18-2013, 10:41 PM   #6
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Originally Posted by wrxlaunch View Post
Of course not saying you're wrong, but wasn't aware that it wouldn't work. If you have more knowledge on what might be different, or what might be needed to make it work, that would be helpful!
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Old 06-19-2013, 03:39 AM   #7
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im not sure exactly whats different, but heres my 2 cents. Most guys on here (i would say around 80%) are "bolt on." guys. it could be as simple as the flange on the cold side isa bolt on instead of a slip on like our cars, and youll need to shave it off or make an adaptor. probably not a big deal.

Anything will fit. People take holsets out of diesels and run them with completely custom fabbed parts.

you just may have to put some work into it

as for injectors, bigger is better. drop 2000cc injectors in there if you really want. if it were me, i would do some DW850s. remember you can tune 1000cc injectors to spray 600ccs, you cannot tune 600cc injectors to spray 1000ccs.
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Old 06-19-2013, 10:20 AM   #8
Mental
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Look at the compressor housing on that VF52 picture. See how the outlet goes stright up? Now look at any 02-07 wrx turbo. That's the most obvious issue I can see.
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Old 06-19-2013, 11:13 AM   #9
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Grab a VF39 or 16g-xt. I am rocking my 05 wrx with dark blues and a vf39. Have no clue on HP figures because dyno went down so i street tuned. Bought the car at 55kmiles with the vf39 and regular injectors. swapped to blues and pro tuned. and had it like that since. Currently approaching 89k. I boost about 18.7psi
Mods
vf39
dark blues
GS EBCS
Helix DP
3in exhaust to borla hush
Invidia UPP
Stock headers(had megans and regret every minute of those)
Perrin Crank Pulley
DW200 Fuel Pump
Godspeed TMIC( Ebay brand but has worked great...just heavy as ****)
Mishimoto Radiator

VF39 can leave the want for more power but it is pretty damn safe just doesnt last as long as desired(wastegate cracks) but a vf43 pretty much fixed that and performs the same.

I recently blew a vf39 and EVERYONE and their mothers said get a 16g-xt but I couldnt fit in budget.

In the case you already have the vf52 I saw a "Mighty Car Mods" from youtube take a td04 outta forester and put it in a mx5 and they cut and welded a different flange. I think you would need an approriate TMIC and I believe coolant pipes

Last edited by PSBeachBum; 06-19-2013 at 11:20 AM.
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Old 06-19-2013, 12:10 PM   #10
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if you can get the turbo to work then yes, the dark blues should provide you with enough fuel.
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Old 06-19-2013, 12:11 PM   #11
CIATexan
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Hmm. Well, I have access to a VF48 too, I might go that route for ease of swap.

The VF48 IS a direct swap, yes?
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Old 06-19-2013, 12:21 PM   #12
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Yes, it'll be much easier than trying to to make the VF52 fit. Also, probably a better turbo to begin with.
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Old 06-19-2013, 12:30 PM   #13
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Quote:
Originally Posted by CIATexan View Post
Hmm. Well, I have access to a VF48 too, I might go that route for ease of swap.

The VF48 IS a direct swap, yes?
ive got a vf48 on my bugeye. It is a great turbo!!
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Old 06-19-2013, 12:42 PM   #14
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Considering the vf52 is from an 09+ wrx which came with the dark blue injectors from the factory then yes you can use them but will be close to maxing them out.
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Old 06-19-2013, 01:52 PM   #15
CIATexan
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Next question, With the VF48, will I need a different restrictor pill?
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Old 06-19-2013, 03:15 PM   #16
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I removed the restrictor pill altogether when I was tuned for my 3 port EBCS setup. It's still out now after being retuned for hybrid EBCS/MBC.

Ah I noticed that was a different guy mentioning EBCS in his post. If you are stock boost control, ask your tuner.
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Old 06-19-2013, 03:45 PM   #17
CIATexan
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Thats what I figured about removing it all together, I'm going to be running a Cobb EBCS so I'll likely let COBB deal with it when they tune it.

Thanks!
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