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Old 10-09-2007, 03:45 AM   #1
WRX401
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Join Date: May 2003
Location: ONTARIO CA
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Default Need some advise on hybrid build.

Let me know if this setup will get me in the 300hp range if not what hp will I be in? Iím doing a hybrid build. Thanks

Stock EJ25 short block from Subaru, with stock 2.0 head
750cc injector, fuel rail and 255 fuel pump
18g8cm turbo, stand alone computer system
up pipe, down pipe, intake and exhaust
upgraded TMIC

Not sure if I should upgrade the stock turbo manifold to a higher performance one? Let me know what you guys think.
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Old 10-09-2007, 11:23 AM   #2
rustyzipper
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Should be fine, I personally would go with bigger injectors so you dont have to fool with them again when you decide that you are tired of that 18G. Might also want to think of an EWG setup to let that little guy breathe up top. Or Sti cams in the 2.0 heads. 0.02
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Old 10-09-2007, 05:12 PM   #3
WRX401
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Originally Posted by rustyzipper View Post
Should be fine, I personally would go with bigger injectors so you dont have to fool with them again when you decide that you are tired of that 18G. Might also want to think of an EWG setup to let that little guy breathe up top. Or Sti cams in the 2.0 heads. 0.02
I was thinking about STI cams or 06 wrx cams also. You have any idea how much they would run me? I'm pretty sure I'll need a stronger set of valve springs and retainer also right? Why would it be better to with an EWG? Thanks in advance.

Last edited by WRX401; 10-09-2007 at 05:33 PM.
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Old 10-09-2007, 10:26 PM   #4
rustyzipper
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Quote:
Originally Posted by WRX401 View Post
I was thinking about STI cams or 06 wrx cams also. You have any idea how much they would run me? I'm pretty sure I'll need a stronger set of valve springs and retainer also right? Why would it be better to with an EWG? Thanks in advance.
You could probably pic up some nice used ones from the Classifieds forum here , but you have to be quick about it. Springs and retainers is always a good idea when going with a more aggressive cam. The EWG is not per se "better" ,just one more way to get the most out of your upper RPM power. If you are pulling the motor , I would go with the cams. You can always add the EWG to the setup later. This will allow the 18G to hold boost easier up top.
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Old 10-11-2007, 06:23 PM   #5
jbwrx
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I would guess that setup would be good for around 350 hp. I have a hybrib motor with a vf43 and supporting mods and I put dow 315whp and 335 wtq.
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Old 10-23-2007, 11:10 AM   #6
jonhybrid
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Quote:
Originally Posted by WRX401 View Post
Let me know if this setup will get me in the 300hp range if not what hp will I be in? Iím doing a hybrid build. Thanks

Stock EJ25 short block from Subaru, with stock 2.0 head
750cc injector, fuel rail and 255 fuel pump
18g8cm turbo, stand alone computer system
up pipe, down pipe, intake and exhaust
upgraded TMIC

Not sure if I should upgrade the stock turbo manifold to a higher performance one? Let me know what you guys think.
What head gaskets are you going with
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Old 10-23-2007, 08:52 PM   #7
WRX401
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Originally Posted by jonhybrid View Post
What head gaskets are you going with
planning on using the stock 2.5 head gasket from subaru or is it better if so go with something else??
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Old 10-23-2007, 08:55 PM   #8
WRX401
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Quote:
Originally Posted by jbwrx View Post
I would guess that setup would be good for around 350 hp. I have a hybrib motor with a vf43 and supporting mods and I put dow 315whp and 335 wtq.
Did you go with after market cams also or did you use the ej20 cams?
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