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Old 03-09-2005, 04:12 AM   #1
brandon230573
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Default cobb stage 2 looking to go to stage 3, turbo swap, but which one?

I have an 02 wrx stage 2 cobb tuning with the accesport which is the down pipe up pipe and turbo back exhaust. I have the injen cold air intake two which is the only intake cobb supports with their maps, conveniently for me. I also have suspension and other stuff but for the sake of my question the above is enough info...

WHAT TURBO SHOULD I GET!!!??? I can never get a straight answer...I mean obviously cobb only supports the stock turbo and the VF series IHI turbos. Basically my question is VF 34 or VF 39? whats the difference, also can i get JDM VF turbos? are they better? my friend of a friend is selling his JDM Vf 39 and im wondering if i should get it...are
JDM different/better?

I would REALLY appreciate some insight on this matter from someone/s that knows their ****, thanks very much.

Brandon

Heres a pic of my baby just for ****s and giggles...

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Last edited by brandon230573; 03-09-2005 at 04:19 AM.
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Old 03-09-2005, 08:37 AM   #2
DickWRX
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Go with VF34! You will have to get custom tune with VF34 or anything elses-which means you have to get StreetTuner from COBB. Or go to COBB and get custom tuned by them.
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Old 03-09-2005, 08:43 AM   #3
Quack
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VF30 or VF34 if you staying with cobb (w/o going to the streettuner)

if you are going with the streettuner, the VF22 if you are staying with the VF line or anything that your pocket can afford
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Old 03-09-2005, 09:29 AM   #4
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If you are getting the StreetTuner, get an 18G, 20G, or Green that is externally gated. You will never look back.
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Old 03-09-2005, 10:18 AM   #5
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Also have to say VF-34 ... They already support them, and it would be a basic plug and play for you ... Now if you were into something a little more powerful, You'll have to pick up the Street Tuner for your AP, and I'd probably go with the VF-22 ... There's alot of debate on the 22 vs. an 18g ... Most seem to believe there pretty much equal (not myself, but most do) ... Also, the 22 certainly has the advantage as far as pricing goes ... Good luck ...


Oh, and sweet ride ya got there ...
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Old 03-09-2005, 10:22 AM   #6
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Also to note ... I don't know this from first hand experience, but I have a pretty good idea that any JDM turbo would require specific JDM exhaust components ... IE: JDM specific UP/DP, not sure on the cat-back ...
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Old 03-09-2005, 12:22 PM   #7
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Quote:
Originally Posted by pezman04wrx
Also have to say VF-34 ... They already support them, and it would be a basic plug and play for you ... Now if you were into something a little more powerful, You'll have to pick up the Street Tuner for your AP, and I'd probably go with the VF-22 ... There's alot of debate on the 22 vs. an 18g ... Most seem to believe there pretty much equal (not myself, but most do) ... Also, the 22 certainly has the advantage as far as pricing goes ... Good luck ...


Oh, and sweet ride ya got there ...
yep, i was going to go with either a Super16g or 18g, but from the searching the VF22 seems like it will serve my purposes and the cost of the ST & VF22 would close to what a 18g (oil & water cooled) would cost.
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Old 03-09-2005, 05:04 PM   #8
brandon230573
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WOW! Thanks everyone for you replies
, very helpfull. How much is the street tuner? When is it out? Also I basically want to be able to burn an sti, audi s4, new M3, porsche carrera possibly etc. Will the Vf 34 turbo be able to take me there? now i realize it wont obvously if I get just the turbo, but im talking with that turbo and new IC, radiator, silicone hoses, injectors and fuel pump obviously, and other supporting mods. If so then Ill jump on the Vf 34, if not maybe i need something else. Also can anyone tell me more about the difference between JDM sti turbo vs the STI turbo here? Like the Vf 39 JDM vs the Vf39 here? will the Vf 34 JDM turbo work with the cobb tuning? Is there even such thing as VF 34 turbo JDM being differet then the one here? THANKS A BUNCH EVERYONE
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Old 03-09-2005, 05:12 PM   #9
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Not to jack your thread but....where do you live? That place looks nice as helllll. I look out the window, and all I see is crusty snow, gray skies, and concrete buildings.


Getting back to the thread, isn't one of the turbos more streetable, I think the 34. I thought the 22 had a lot of lag, and was better for drag and stuff.
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Old 03-09-2005, 06:09 PM   #10
brandon230573
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lol i keep getting people saying they like the backround better then the car, I live in California, near La but on the coast, my aprtment is only a few blocks from where i took the pic.heres a few more pics for ya...





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Old 03-09-2005, 10:27 PM   #11
IntraWRX
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is that somewhere between palisades and malibu? that first picture is AWESOME! the car looks good too.
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Old 03-09-2005, 10:32 PM   #12
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Quote:
Originally Posted by brandon230573
WOW! Thanks everyone for you replies
, very helpfull. How much is the street tuner? When is it out? Also I basically want to be able to burn an sti, audi s4, new M3, porsche carrera possibly etc. Will the Vf 34 turbo be able to take me there? now i realize it wont obvously if I get just the turbo, but im talking with that turbo and new IC, radiator, silicone hoses, injectors and fuel pump obviously, and other supporting mods. If so then Ill jump on the Vf 34, if not maybe i need something else. Also can anyone tell me more about the difference between JDM sti turbo vs the STI turbo here? Like the Vf 39 JDM vs the Vf39 here? will the Vf 34 JDM turbo work with the cobb tuning? Is there even such thing as VF 34 turbo JDM being differet then the one here? THANKS A BUNCH EVERYONE
If you're going to upgrade the intercooler anyway you will need the Street Tuner and you may as well go with at least the vf22.

As far as JDM goes as long as you're not running a twin scroll turbo all the vf30's/34's/22's will bolt up to your uppipe and downpipe.
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Old 03-10-2005, 01:55 AM   #13
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34= ballbearing turbo = slightly faster spool up, the 39 is not, however you will have to get the StreetTuner ($400) and custom tune with a bigger IC if you want to sit in a seat to take the STI , M3 ,etc. "stage 3" from cobb is the really the only real hope that us 2.0l guys have against the 2.5 l guys of sti. and this stage is pushing the strength of the internals ,~350hp. go with the VF34 and the StreetTuner and keep us informed.
ps. sweet ride
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Old 03-10-2005, 02:04 AM   #14
brandon230573
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well if im gonna get the street tuner though i might as well forget the vf34 and get the vf22? right?....i mean i want to beat a V8 audi S4 for gods sake...also is the street tuner out yet? and is it hard to use? i mean can i tune myself, im no genius with car stuff i just know the basics..Also, could anyone tell me what the hp and/or 1/4 mile difference would be between stage 3 with the vf34 and what it would be with the vf22? obviously every car is different but an estimate would be cool. Right now i think im doing like 5 second 0-60 and just under 14 1/4 mile, maybe like 13.8,,,thanks that would be interesting and helpfull. Actually I already know the cobb website says the vf34 hp is 315 with 91 octane, but im still very curious about the other turbo vf22 hp and both of their 1/4 miles.

Last edited by brandon230573; 03-10-2005 at 02:17 AM.
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Old 03-10-2005, 02:04 AM   #15
brandon230573
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its actually just the straight up bluffs in the palisades, not malibu at all.
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Old 03-10-2005, 02:34 AM   #16
Thai Silk
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You don't need the street tuner to run the VF34 or VF30. Since you have the AP all you need is either the VF30 or 34, STi injectors, and stage 2 mods at the minimum to run the stage 2.5 which will yield you the 315 crank hp which Cobb has mentioned.
Of course you can have an up-pipe, ic/maf/inlet hoses, & pulleys and still be in the parameters of the AP. If you plan on getting headers, FMIC, etc, or any turbo other then the VF30 or 34 the street tuner is a must.
Hope this helps-Ben
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Old 03-10-2005, 02:41 AM   #17
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Also, I see you are also trying to beat some powerful cars. I hope you have the money for a new tranny or gear sets. With all the power you are shooting for I would be more worried about replacing your clutch and a borked tranny.
I am ready to be stage 4 by the end of March and I already have money going towards either Kaaz gear sets or a non DCCD STi 6 speed.-Just some food for thought
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Old 03-10-2005, 11:40 AM   #18
earlmale
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you don't need street tuner for headers. for FMIC, you do. i know b/c i'm running the Cobb vf30 map with borla headers. yes, a custom tune would take advantage of everything better, but that's the same with any mod.
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Old 03-10-2005, 12:01 PM   #19
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34 is probbaly the best
30 inbetween
39 faster spool less top end (by far cheeper half as much or less)
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Old 03-10-2005, 12:06 PM   #20
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The difference between the 30/34 and 39 is miniscule...so little infact that one would have a very hard time trying to tell any difference between the turbos. I got my 39 with 6k miles on it for 385 shipped...ill take my SLIGHTLY lower top end for saving 300 bucks.
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Old 03-10-2005, 03:08 PM   #21
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Quote:
Originally Posted by brandon230573
well if im gonna get the street tuner though i might as well forget the vf34 and get the vf22? right?....i mean i want to beat a V8 audi S4 for gods sake...also is the street tuner out yet? and is it hard to use? i mean can i tune myself, im no genius with car stuff i just know the basics..Also, could anyone tell me what the hp and/or 1/4 mile difference would be between stage 3 with the vf34 and what it would be with the vf22? obviously every car is different but an estimate would be cool. Right now i think im doing like 5 second 0-60 and just under 14 1/4 mile, maybe like 13.8,,,thanks that would be interesting and helpfull. Actually I already know the cobb website says the vf34 hp is 315 with 91 octane, but im still very curious about the other turbo vf22 hp and both of their 1/4 miles.
Just head over to the "Proven Power Bragging" forum and do some searches. I have been researching a nice upgrade for my wrx and was considering Cobb stg2.5 until they released the Street Tuner. If you have a shop nearby that can do a custom tune for you then st + fmic or big tmic + vf22 is going to be your best bet. From what I've read the 22 holds power much better to redline but you'll want some 650cc injectors instead of the STi pinks. You can run a 30/34/39 at 19 psi and have oil blowby or run the vf22 at 19psi without too much boost taper toward redline and a happier turbo. Just do some searches and read and the vf22 will probably look a lot better to you than the other IHI options, and it's a cheaper turbo at <$600 new.
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Old 03-15-2005, 11:15 PM   #22
brandon230573
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what does a vf34 stage two cobb wrx with 315 crank hp translate into 0-60 time and 1/4 mile time, then what does the same thing but just with a vf22 turb translate into 0-60 time and 1/4 time....please answer this, then i will be able make my decision.
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Old 03-16-2005, 12:21 AM   #23
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I would of said it was in Palos Verdes. any way I think the best bang for your buck turbo is the vf 30 it spools pretty fast and has desent top end and I have seen them for sale for 350. Every one always talkes about the 34 but I believe it only spools up a couple hundred RPMs faster than the 30. I used to have full boost 18 psi at 3200 rpm on a TXS base map.

Later Jeff
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Old 03-16-2005, 01:18 AM   #24
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Quote:
Originally Posted by brandon230573
what does a vf34 stage two cobb wrx with 315 crank hp translate into 0-60 time and 1/4 mile time, then what does the same thing but just with a vf22 turb translate into 0-60 time and 1/4 time....please answer this, then i will be able make my decision.
If you are planning on runnin the vf22 on the vf34 map, I would say DONT. On any base map, the vf22 might be slower to 60mph becase of the lag & .1-.2 quicker in the 1/4 mile (if that).....get a custom tune on either the vf30 or 22, and the 1/4 mile should be about the same.
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Old 03-16-2005, 02:40 AM   #25
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Quote:
Originally Posted by Drews_WRX
If you are planning on runnin the vf22 on the vf34 map, I would say DONT. On any base map, the vf22 might be slower to 60mph becase of the lag & .1-.2 quicker in the 1/4 mile (if that).....get a custom tune on either the vf30 or 22, and the 1/4 mile should be about the same.
i have cobb tuning so obviously im would tune for each turbo, the 34 has a map already, the 22 i would buy the street tuner... and i doubt that the 1/4 would be the same for both....i want to know the specific 0-60 and 1/4 mile for each, from someone that knows their **** prefereably, not that you dont, im just saying.
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