Twins anyone!!!!!!! - Subaru WRX Forum
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#1 Old 01-20-2008, 11:51 PM
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Thumbs up Twins anyone!!!!!!!

Hey guys iv been reading up im probebly doing the Hydra ems.. but here my question anyone fart around with a twin turbo setup.. i know the EJ20TT jdm motors out of the legacy are pretty bad ass. can i put a TT setup on my sti.. im thinking about buying the ej20tt motor and pretty much building my STI block and heads but putting on the Twin setup and tuning it out what does everyone think.. Subaru's got it in japan why not bring it to the states
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#2 Old 01-21-2008, 06:44 AM
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Honestly you probably could do it but you'll net more power with a single, larger turbo rather than two smaller ones. The single large turbo will give you less lag and overall a better power band.

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#3 Old 01-21-2008, 10:22 AM
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i was just tinkering around with the thought of twins
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#4 Old 01-21-2008, 10:55 AM
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Quote:
Originally Posted by Scooby2006 View Post
i was just tinkering around with the thought of twins

Yeah Dan I hear ya, it does sound like a good idea and honestly would work ok. I'm sure a single larger turbo just works better overall.

Mike
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#5 Old 01-21-2008, 11:06 AM
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I thought the whole point of having two turbos is to get rid of the lag.
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#6 Old 01-21-2008, 11:17 AM
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Quote:
Originally Posted by MetalGearRX View Post
I thought the whole point of having two turbos is to get rid of the lag.
You're right. Im reading up on Wiki (Twin-turbo - Wikipedia, the free encyclopedia) which I should have done before.

I need to research some more but I do recall the larger single setup to be more efficient. Anyone else feel free to chime in here.

It looks like a bi-turbo application is pretty good, using only one turbo for low end power then both for high end.

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#7 Old 01-21-2008, 11:41 AM
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Yeah, i dont think i'm going to go twin turbo on my suby. Too much unneccesary power. Great to have but no point in having it if you cant use it to its full potential.
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#8 Old 01-21-2008, 03:32 PM
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well its between the twins or a greddy turbo upgrade... the twins i would be using two IHI VF39 turbos. mated to a Custom equal length header. to a true duel exhaust.. with the hydra ems to tune everything..hoping to push someware in the lines of 600 to 700 HP.. pretty much so when one of those new GT-R's come my way they will think twice befor doing that again
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#9 Old 01-21-2008, 04:36 PM
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My car for the most part is bone stock besides some cosmetics like the lights. I'm planning to just lightly mod the car and run the engine til it dies and then do a motor swap for an STi motor. Then maybe i'll go twin turbo.
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#10 Old 01-21-2008, 06:03 PM
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Worst idea ever.There is a reason every 3rd gen RX7 and Mark IV Supras ditch thier dual turbos for one.Also are you talking sequential or parallel set up?Big difference.

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#11 Old 01-21-2008, 06:19 PM
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I would say sequential if anything.

Mike
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#12 Old 01-21-2008, 06:37 PM
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Twin scroll would be a better route to spend the money on then twin turbo.Twice the headache for set up and tuning.Definatly need deep pockets unless you can weld.

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#13 Old 01-21-2008, 06:44 PM
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I don't believe the LGT TT motor would fit in a new Impreza chassis.

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#14 Old 01-21-2008, 08:24 PM
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Originally Posted by psinuse View Post
I don't believe the LGT TT motor would fit in a new Impreza chassis.
It won't due to the LHD steering colum placement.

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#15 Old 01-21-2008, 08:48 PM
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DumDUm just hit the nail on the head there. You wouldnt be able to set up the jdm engine in USDM chasis. The steering column would be in the way of one of the turbos.

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