new turbo ATP GT3071 - Subaru WRX Forum
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#1 Old 01-12-2008, 07:24 PM
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new turbo ATP GT3071

please guys i really need you to help me out hear. my 07 2.5 WRX, has a 75mm catless down pipe, center pipe, and turbo back, k&N tayphoon, ecutek, and warlbro fuel pump. NOW its time to change my turbo. what i am looking for is a turbo with fast spoot up and not a lot of lag becuase where i need it the most is on our roads here in lebanon which are mostly mountain roads, so i mostly am in 2nd and 3rd gear and i have sharp turns which means i need my turbo to be ready to perform on rpm's close to stock. another point is that i wont be running more than 19psi on my car because im scared to blow up smth in my enging or so. Gruppe-s advised me with the ATP GT3071. what do you guys say, thanks.
Nicolas,.
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#2 Old 01-12-2008, 07:37 PM
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If you don't want a lot of lag, I would suggest something a little smaller than a 30R. Do you have upgraded fuel injectors an intercooler?
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#3 Old 01-12-2008, 07:52 PM
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no not yet, im planning on putting sti TMIC. ## saying the gt3071 is too big? on what rpm does it start spooling? before 4000rpm?
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#4 Old 01-12-2008, 07:59 PM
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It will start spooling before 4000rpm, depending on how much your gunna boost it you may reach full boost before 4000 or you may not. I would recommend a big timc since the sti tmic is not that much bigger than your wrx tmic. The less boost you run the faster it will spool.
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#5 Old 01-13-2008, 12:43 AM
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I still don't know if he's got a USDM or JDM motor in that thing.

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#6 Old 01-13-2008, 03:16 AM
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It says he's from asia, so i'm guessing JDM. What does your car redline at 7k or 8k?
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#7 Old 01-13-2008, 05:55 AM
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Don't listen to Gruppe-s, their reputation has plummeted over the last year. I wouldn't do any business with them. Also I didn't see modded or bigger injectors on your list. Don't forget those.

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#8 Old 01-13-2008, 07:06 AM
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my car is a european spec it redlines at 6500rpm up to 8000rpm. for what im looking for will the gt3071 do the job or not? i will need fuel injectors and a bigger tmic?
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#9 Old 01-13-2008, 09:45 AM
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another point is that i wont be running more than 19psi on my car because im scared to blow up smth in my enging or so.
It not always has to do with boost pressure,it's airflow to.Why does everyone want to run this big arse turbos with stock cams,heads and throttlebodies.Un-efficient You see big #'s but so much is being lost.You would get more running a smaller turbo to it's max potential and it would cost much,much less.

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#10 Old 01-13-2008, 09:55 AM
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so which turbo will you propose dumdum? 330-350hp will satisfy me. i want a turbo which will perform well on 18-19psi and spool up close to stock, and not ruin my engine internals. what do you reccomend? what do you think about Forced Performance Green Turbo ? and the Forced Performance TD06 20G ? these are at gruppe-s. thanks guys for your help.
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#11 Old 01-13-2008, 10:18 AM
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so which turbo will you propose dumdum? 330-350hp will satisfy me.
Well are we talking chp/bhp or wheel hp?Chp/bhp (crank hp/base hp) the stocker can do that.WHP(wheel hp) I would go with a EvoIII TD05-16G.The turbos you are picking are way big.The bigger the turbo,the more lag.You can't have your cake and eat it too.Doing things like sticking with a TMIC,3 port boost solenoid,EL header and port/polish/ceramic coating will improve spool up and power through out the powerband.

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#12 Old 01-13-2008, 10:29 AM
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im talking bhp. im not going to change engine internals now. the turbos i mentioned before are too big? what are my options thenn?
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#13 Old 01-13-2008, 10:35 AM
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im talking bhp. im not going to change engine internals now. the turbos i mentioned before are too big? what are my options thenn?
I just told you.

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#14 Old 01-13-2008, 01:17 PM
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I would suggest going with an evo 3 16g.
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#15 Old 01-13-2008, 01:19 PM
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^^ That's where I'll be headed when the time comes.

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