Tranny upgrade 05 wrx wagon - Subaru WRX Forum
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#1 Old 08-31-2013, 06:30 PM
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Tranny upgrade 05 wrx wagon

Just want to know my wrx is completely stop I plan on doing stage 2 soon along with tires but it dosent stop there. I've got all winter.
So my question is how much hp or what stage will I need to upgrade to the 6 speed sti? And would it be easier to just do a complete sti swap

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#2 Old 08-31-2013, 06:31 PM
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A lot of it depends on your driving style.

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#3 Old 08-31-2013, 07:34 PM
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Unless your going to go all crazy power, what you have should be fine. If they break go with 08LGT gears...

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#4 Old 08-31-2013, 10:33 PM
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What driving styles are you referring too. And I'd like to make 400 whp at some point. Nobody would see it coming in the wagon

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#5 Old 08-31-2013, 10:59 PM
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Im refering to if you like to launch it hard or bang through the gears or if you drive it modestly. Will it be seeing track use or just used on the street?

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#6 Old 08-31-2013, 11:16 PM
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I rarely race but when I do it will be launching it hard. Going stage 2 over the winter. No track use. Just street.

Also for now will replacing the clutch with a stage 4 help me or just tear other parts up? If I'm launching pretty hard of the block

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#7 Old 09-01-2013, 05:04 AM
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Some people have great luck with the wrx 5spd and some have faliures. I wouldnt use anything but the oem clutch unless you have upgraded your gears. You want the clutch to be the weak link so that all the shock dont go directly to your gears (unless they are upgraded).Clutches are way cheaper than a trans! The oem clutch can hold stage 2 just fine.

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#8 Old 09-01-2013, 07:29 AM
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Okay i'm gonna be a d**k here. Have you ever driven a 400whp car before? For that kind of power I'd highly suggest just doing a complete STi swap. Your going to spend a lot of money to get those numbers and your car will not be the best daily driver.

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#9 Old 09-01-2013, 08:43 AM
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Let's be realistic. If you're being fickle about buying stage 2 mods (as you are in your other thread), an ultimate goal of 400 whp is a pipe dream. You should lower your expectations to something more realistic, like 300 whp. You're not going to have a 400 whp car if you're going to pinch pennies.

As for your 1st question, that depends on you more than anything else. There is no set answer.
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#10 Old 09-01-2013, 10:30 AM
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Not trying to be an a** but yes I've built many drag cars including my 650 hp nova that's sitting in my shop right now. So yes I've driven cars well over that I'm just new to the subaru game. No need to be a d*** about my questions. I wouldn't be asking all these just for nothing I'm not here to waste anyone's time.

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#11 Old 09-01-2013, 01:50 PM
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Alright then. If you want a 400whp car you're gonna have to do a complete STi swap, trans and all. You'll have to buy the complete drive line, axles, hubs, suspension, etc. For that you're looking around $5-6000. Then you get the fun job of installing it. Then comes the fun part, your also gonna need to switch flywheels and clutch assembly, you'll need a DCCD switch or disable it. From there it's pretty straight forward, build a motor that can handle that type of power, along with the correct turbo selection, GT30ish would work, front mount intercooler and other odds and ends.

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#12 Old 09-01-2013, 03:57 PM
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Heres a good little read related to this Public Service Announcement. "I want 400whp!" Are you sure? - NASIOC

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#13 Old 09-02-2013, 08:32 AM
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He's said he is capable of handling a 400 whp car. And a GT30 may or may not get him there depending on the dyno and outside conditions.


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#14 Old 09-02-2013, 02:50 PM
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GT30 would suffice...

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#15 Old 09-02-2013, 04:27 PM
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Quote:
Originally Posted by psinuse View Post
GT30 would suffice...
Most times...if he's running 91oct it may not.


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