turbo upgrade - Subaru WRX Forum
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#1 Old 12-11-2011, 04:46 PM
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turbo upgrade

hi everyone i just switched to this form. i used nasioc before and i couldnt get a straight answer.i have a 05 wrx wagon with few mods
They include:
invidia n1 race
invidia catless downpipe
cobb ap stage 2
cobb sf intake

my question is where do i go from there. i heard i should switch to a catless uppipe.I want to do a bigger turbo was thing about the vf 39 or 18g?I know i have to do a bigger intercooler tmic or fmic which one? and what else do i need to do? can anyboby help me?
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#2 Old 12-11-2011, 04:54 PM
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Most guys go the vf39 route next. You'll need Sti or equivalent injectors, better fuel pump, Sti top mount to boot. and you definitely want to change the up pipe.

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#3 Old 12-11-2011, 04:58 PM
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that should put around 300 whp? thats my goal
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#4 Old 12-11-2011, 05:12 PM
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If you can afford it, get a 16G turbo instead. Im still not a strong believer or advocate of the STI turbo swap. But either way, get you a nice TMIC, bigger injectors (around the 650cc range), a fuel pump, a catless up pipe (either off an sti or 06-0 wrx will work just fine) and if you can also get it, a good 3 port EBCS (like the grimmspeed unit) and then get yourself a protune.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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#5 Old 12-11-2011, 05:34 PM
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with 300 whp would i need to upgrade anything on my suspension?
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#6 Old 12-11-2011, 05:38 PM
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Never hurts to have better handling. There is plenty of improvement to be had over stock with just a good set of sway bars and endlinks, upgraded brake pads, stainless steel lines, and better fluid.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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#7 Old 12-11-2011, 05:47 PM
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also would TurboXS tmic be a good choose?
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#8 Old 12-11-2011, 05:57 PM
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Thats what I run on my 07 WRX with a 20G, works great, looks nice also. Its just a bit of a PITA to install. Its MUCH larger than stock, so paying attention and having patience with installation pays off with it.

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"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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#9 Old 12-11-2011, 06:01 PM
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as for the turbo goodspeed 16g and the Blouch 16g which one would be a good choose?
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#10 Old 12-11-2011, 06:03 PM
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I personally dont know anyone running a goodspeed unit. My 20G is a Blouch product, and I love it. I know many subie guys running all kinds of different Blouch turbos and they love them. Blouch is a great company with great support.

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Cobbtuning.com"
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#11 Old 12-11-2011, 06:06 PM
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ill go with the Blouch then. thank you for all your help
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#12 Old 12-11-2011, 06:07 PM
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Good luck with everything. Let us know how it all turns out.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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#13 Old 12-11-2011, 07:18 PM
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If your gunning for 300whp might I add that I would also start saving some money for a new gear set in your future.
Turbowise your gonna need at least an 18g to hit 300whp. 20g would be best bet and a bit safer. Intercooler I'd go with either a Turbo Xs, I run the Hyperflow, or if you can swing the cash outlay a Process West is very nice, but VERY pricey.
Injectors I'd say 750's, but 850's would be better and they would give you a bit of head room come tuning time...

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#14 Old 12-11-2011, 07:38 PM
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i also read up on that. the tranny should hold if you dont drive recklessly and dont launch. so should i go with the 16 or 20g??
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#15 Old 12-11-2011, 09:22 PM
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20g, it's what I am currently running. You sacrifice a bit of low end power for awesome top end. Also go with a TD05 turbine housing and not the TD06. If you go with a Blouch call and talk to Mike he will steer you in the right direction. The reason I said what I did about the transmission is from years of watching people destroy them even on stock power levels. Mine lasted a good while and to be honest I think it only has a bent shift fork and I am making well over 300whp. It really does come down to the driver, but a few of us on here honestly believe mine was just a factory freak transmission...

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