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Old 02-07-2012, 11:55 PM   #1
ductech
Scooby Newbie
 
Member#: 307345
Join Date: Jan 2012
Location: PNW
Vehicle:
74 914 Porsche
rusty red

Default ej25 sequential turbo setup

so my buddy who I am assisting on his 914 subaru conversion. supposedly his motor is an ej25 which is stamped on the case. it came with the sequential turbo bits one turbo is a 33 and one is a 32. now .. getting to the meat of the questions here. We have just enough of the twin turbo goodies to make it impossible to piece together let alone have a megasquirt run them sequentially. supposedly the motor is out of a jdm legacy. Now if we are to run an oem bolt-on solution off of a wrx what would be the options. the heads have a daul exhaust port per head. just like on my sohc ej22. and what would be the best matched turbo for the injectors that come on these motors. just handed the injectors to my friend so he could take them to witch hunter in Bothell. So what are the choices here to make this thing go and not lose any power from the stock sequential setup minus some turbo lag.

Thanks Nasioc Peoples for your time
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Old 02-08-2012, 02:00 AM   #2
johnt2k7
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Member#: 194151
Join Date: Nov 2008
Chapter/Region: MAIC
Location: Maryland
Vehicle:
2008 WRX 5 Door
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Default

Dont see why you couldn't setup the sequential's with MS as long as the bypass vales and waste gates are still in working order. the MS should have extra outputs available to run everything it would just take some tuning to figure out when its best to actuate them but with Tuner Studio it makes it easy to control


all the EJ heads use the same flanges as far as i know so you could get any (OEM or After Market) wrx/sti manifold & up pipe setup and be able to run any stock location turbo.

need custom down pipe, but if your putting a EJ in a 914 i hope you can figure that out on your own

also need to remove and plug all the oil and coolant lines from the drivers side of the engine and get oem wrx/sti coolant feed/return lines and oil feed/drain lines for the pas side.

check this thread out its a walk through of what your talking about doing.
http://sl-i.net/FORUM/viewtopic.php?t=9866

Keep us posted on the build and results
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Old 02-08-2012, 10:35 AM   #3
ductech
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Member#: 307345
Join Date: Jan 2012
Location: PNW
Vehicle:
74 914 Porsche
rusty red

Default

The concept of using megasquirt to control all of the valves and solenoids of the twin turbo setup is not all to scary, just that we are missing parts of the exhaust, the solenoid or valve that physically moves the flapper on the number 2 turbo exhaust and so on and so on. what would be a good combo of oem stuffs that would bolt right up? should we go super cheap and get a slightly cracked vf39? or would i need a turbo that can flow more ?
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