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Old 04-12-2009, 12:51 AM   #1
pimpininaz
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Default all you Gurus! turbo upgrade help/question

so its time to make the bump from the stock turbo, ive been researching the best bang for the buck route here and am leaning towards a 20g. right now the car sits with a 3" TBE, intake, ap2.
its an 07 wrx, my question to the gurus is what supporting mods will i need for a 20g? i'd go e85 but in flagstaff thats not feasible
i was thinking FMIC, upgraded injectors just not sure how big..... so to all you suny gurus..... WTF do i need lol?
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Old 04-12-2009, 01:25 AM   #2
v8eaterWRX
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I would say some 700/750cc injectors and just about any fmic would be fine. You could probably get away with a little smaller, but I wouldn't. A good tune is key. There are a few "tuners" in SWIC, then there are a few tuners. I would recommend Mark (brocksdad) as a tuner if you can get to the valley

For injectors and FMIC send a PM to Evil Performance. He is good people and takes good care of the locals
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Old 04-12-2009, 03:02 AM   #3
06STi
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Quote:
Originally Posted by pimpininaz View Post
so its time to make the bump from the stock turbo, ive been researching the best bang for the buck route here and am leaning towards a 20g. right now the car sits with a 3" TBE, intake, ap2.
its an 07 wrx, my question to the gurus is what supporting mods will i need for a 20g? i'd go e85 but in flagstaff thats not feasible
i was thinking FMIC, upgraded injectors just not sure how big..... so to all you suny gurus..... WTF do i need lol?
Whats you power goal? What is your plan with or how do you use the car?

If your going to stick with it as a daliy driver then 20g and fmic is a little laggy. Maybe a 18 and a STi or APS type tmic is better. STi tmic are quoted to be good for 400 hp. Up north you dont have the heat like down in the valley. So I'd stick with the tmic and enjoy the quick spool.

I would look into a true ball bearing turbo like a 1820
or something like a 18g, vf43
A bigger then wrx tmic and a water spray kit. OEM Sti or APS TMIC with the cusco water spray controler works killer.
You should be able to keep your blue injectors and just run a wally 255 pump

Bigger then those turbos then bump to some dtwks 740's That way you have room to grow later.

Last edited by 06STi; 04-12-2009 at 03:36 AM.
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Old 04-12-2009, 03:32 AM   #4
kpluiten
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^^ I'm pretty sure the VF43 and the 18g are not ball bearing turbos...
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Old 04-12-2009, 03:35 AM   #5
06STi
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Quote:
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^^ I'm pretty sure the VF43 and the 18g are not ball bearing turbos...
Ah... I thought the 43 was at least. But they are still great turbos to be had.

fixed..
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Old 04-12-2009, 11:50 AM   #6
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The stock 565 injectors will not be good for any turbo above a VF39/43/48. You will need at least 750s or my suggestion is to get 850s.
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Old 04-12-2009, 12:04 PM   #7
06STi
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I ran a pe1820 on stock 06-07 wrx injectors with 75-80% idc still made 310 whp and 335 wtq

Could I have made more? I tried a set of pe 850's and gained nothing but less money in my wallet, I ended up going down to the 740's enjoying the power and gas mileage. I'm getting 275 miles per tank on the freeway and about 255-260 in town.
My 740's might be working well because I have aftermarket fuel rails. Which have more fuel loaded to the injectors open point.

I would install the pump, fpr and tune / log, Then if the idc's run 90-95% then upgrade.
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Old 04-12-2009, 02:14 PM   #8
v8eaterWRX
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Stock wrx injectors on a 20g........

Dude you NEVER cease to amaze me.......
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Old 04-12-2009, 02:20 PM   #9
ChandlerWRX06
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850cc on a 20G. . . you'll actually be able to enough a huge jump in power
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Old 04-12-2009, 03:19 PM   #10
fullerswrx
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im getting ready to do the 20g myself. im gonna run deats 740's, walbro 255, and definitely ext wastegate i have a front mount though. then again its going on my leggy.
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Old 04-12-2009, 03:28 PM   #11
2TG8V
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My old set-up 20g with Nismo 740 's
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Old 04-12-2009, 05:08 PM   #12
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Quote:
Originally Posted by blkscooby View Post
The stock 565 injectors will not be good for any turbo above a VF39/43/48. You will need at least 750s or my suggestion is to get 850s.
you are joking?? i hope so
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Old 04-12-2009, 05:14 PM   #13
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I think he means for e85, Jay. Also, did you dig up a vf39 for me? Thanks.
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Old 04-12-2009, 05:37 PM   #14
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well since the OP says its not feasible for him to go E85, why would anyone be talking about it

Ken, we can talk about a VF39
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Old 04-12-2009, 05:48 PM   #15
kpluiten
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Oh, I missed that. Reading > me.
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Old 04-12-2009, 06:12 PM   #16
blkscooby
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Quote:
Originally Posted by Evil Imports View Post
you are joking?? i hope so
Well, maybe out here where it is warmer but back in MA I would not recommend anyone do that. Its amazing how much more air you can pull when is <0F!
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Old 04-12-2009, 06:23 PM   #17
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Back in NJ there was no problems with running pinks/06wrx injectors with a VF39/30/34
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Old 04-12-2009, 07:29 PM   #18
ChandlerWRX06
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considering the sti has no problems with the vf39 and factory injectors. . . sure bigger might be get you some better results in the cold, but eh.
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Old 04-12-2009, 07:29 PM   #19
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pimpininaz...I suggest talking with a “Real Tuner” and tell him the goals you would like to achieve.
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Old 04-12-2009, 07:31 PM   #20
ChandlerWRX06
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yea dont talk to a Reel tuner though. . .

unless you like fishing.
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Old 04-12-2009, 07:48 PM   #21
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"yea".......ummm,yeah.
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Old 04-13-2009, 01:07 AM   #22
pimpininaz
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thanks for all the help guys! can any of the "real tuners" tune on an AP? i had travis tune my old wrx and dyno comp tuned this beasty already.
do the reel tuners use spinner baits?
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Old 04-13-2009, 01:24 AM   #23
kpluiten
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Sell the AP for 500 bucks and get an open source tune from Mark (Brocksdad) for 200 bucks. From what I've heard, and the last two cars I rode in that he tuned, he does good work. I'm serious, sell the AP, go see Mark @ Mark Jones Tuning.
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Old 04-13-2009, 03:02 AM   #24
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I would use at least 750's with a 20g. That should give you plenty of fuel. If you were to need a little more, you can always get an aftermarket pressure regulator or crush the stock one.
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