Welcome to the North American Subaru Impreza Owners Club Sunday April 20, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC General > Newbies & FAQs

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 10-12-2007, 11:54 AM   #1
07imprezadrifter
Scooby Newbie
 
Member#: 147720
Join Date: Apr 2007
Location: Rochester, NY
Vehicle:
2007 Impreza 2.5i
Urban Metallic Gray

Default Installing a trubo into 2.5i

I was looking at maybe putting a turbo into my 2.5i and was wondering what would be required to place a turbo into a not previously turboed system. I read the unabombers manifesto but only saw stuff about upgrading a turbo.
* Registered users of the site do not see these ads.
07imprezadrifter is offline   Reply With Quote
Old 10-12-2007, 11:57 AM   #2
JLwrx06
Scooby Specialist
 
Member#: 117952
Join Date: Jun 2006
Chapter/Region: Tri-State
Location: Vineland, NJ
Vehicle:
06 ltd. wrx awdm'd
CobB StG. 2 SgM

Default

ok well before u hear the many comments saying it is not good to do that i am going to say it. it is not worth the money because what u will spend will net u around what u could get a wrx for and more. but if u really want to do it go a head.


oh yea also why didn't u get a wrx if u wanted a turbo car?
JLwrx06 is offline   Reply With Quote
Old 10-12-2007, 11:58 AM   #3
Defiant Autospeed
Vendor
 
Member#: 155450
Join Date: Jul 2007
Location: Austin/Beverly 2 of us now!
Vehicle:
2007 FXT
WRB

Default

A wrx motor swap or forged piston swap (forged and lower compression) at the minimum. NA subby motors dont hold up well to boost, most blow within 10k miles, many in under 5k. Even when "done right" and "tuned conservatively"

Many hundreds before you have tried, all but a handful (litterally a handful, I know of like 3 guys) have had the motor let go in very short order. Most run an intercooler, only 4-7PSI and tune it well, and it still blows pretty fast. And for your hard work and money, you end up making less power than a stock WRX.


From a financial standpoint, if you want a turbo, you are FAR better off heading back to the dealership and trading it in on a WRX, even a low milage used one. Heck even a 50k mile old one.

Sorry man, I know its not what you want to hear but you need to hear it before you spend a bunch of money.

Here is the rest of the bad news. There is very little you can do to gain any power on that motor. NA subbies dont seem much of anything from bolt on power mods. You can do an intake, header/full exh and cams. You will have spent EASILY 2k, have no powertrain warranty, and if you are lucky, you will have 15whp worth of gains. Pull the motor and do forged high compression pistons, and you have to run 93 octane, and you STILL dont make 200whp. A stock 06+ WRX makes @200whp.

You can improve throttle response a bit with an intake and catback, but thats pretty much it. Beyond that you are throwing money away on power mods.

Now on to the good news. WRX parts bolt up from a suspension and braking standpoint. You can make your car handle INSANELY well, and stop on a dime.

Last edited by Defiant Autospeed; 10-12-2007 at 12:06 PM.
Defiant Autospeed is offline   Reply With Quote
Old 10-12-2007, 12:18 PM   #4
07imprezadrifter
Scooby Newbie
 
Member#: 147720
Join Date: Apr 2007
Location: Rochester, NY
Vehicle:
2007 Impreza 2.5i
Urban Metallic Gray

Default

OK well I figured I would get replies like this. I figured it wouldn't work I was just wondering. I don't really have money for any mods. So even if it would have worked I wouldn't have been able to afford it anyways. Thanks guys.
07imprezadrifter is offline   Reply With Quote
Old 10-12-2007, 12:27 PM   #5
conker69
Scooby Specialist
 
Member#: 59692
Join Date: Apr 2004
Location: Cincinnati
Vehicle:
2005 Impreza WRX STi
WRB-Gold

Default

Then why ask?
conker69 is offline   Reply With Quote
Old 10-12-2007, 12:32 PM   #6
bindriftin
Scooby Specialist
 
Member#: 106411
Join Date: Jan 2006
Chapter/Region: MAIC
Location: NE PA
Vehicle:
2001 GM6
Silverthorn

Default

WTF you fail
bindriftin is offline   Reply With Quote
Old 10-12-2007, 12:44 PM   #7
Defiant Autospeed
Vendor
 
Member#: 155450
Join Date: Jul 2007
Location: Austin/Beverly 2 of us now!
Vehicle:
2007 FXT
WRB

Default

Quote:
Originally Posted by 07imprezadrifter View Post
OK well I figured I would get replies like this. I figured it wouldn't work I was just wondering. I don't really have money for any mods. So even if it would have worked I wouldn't have been able to afford it anyways. Thanks guys.

Sorry man


Dont count yourself out on mods totally. There are a ton of used STI and WRX parts out there cheap that would provide nice improvements on your 2.5i
Defiant Autospeed is offline   Reply With Quote
Old 10-12-2007, 12:48 PM   #8
Rizen
Scooby Specialist
 
Member#: 157002
Join Date: Aug 2007
Chapter/Region: South East
Location: Jacksonville, FL
Vehicle:
2011 STI Sedan
Satin White Pearl

Default

Quote:
Originally Posted by 07imprezadrifter View Post
OK well I figured I would get replies like this. I figured it wouldn't work I was just wondering. I don't really have money for any mods. So even if it would have worked I wouldn't have been able to afford it anyways. Thanks guys.
To be perfectly honest, you'd probably just be better off saving money through college and then when you land a job, buy a WRX. I spent all of HS working on my 73 Duster (it has over 9k in it atm) and then in college I never could afford to work on it. I ended up selling the Duster to my dad, taking my graduation money, and when I landed a job after graduation I bought the WRX.

Also, I spent a ton of money trying to make the Duster into a decent handling car. And I learned the hard way that trying to force a car into something it wasn't designed to do is extremely expensive and usually really not worth it. That would apply to turboing a 2.5i. Trust me, I've been there.
Rizen is offline   Reply With Quote
Old 10-12-2007, 12:54 PM   #9
Defiant Autospeed
Vendor
 
Member#: 155450
Join Date: Jul 2007
Location: Austin/Beverly 2 of us now!
Vehicle:
2007 FXT
WRB

Default

why Rizen dont 440+powerglide?
Defiant Autospeed is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
can i install 2.5L stuff into 2.5i?? kansai104 Newbies & FAQs 19 05-06-2010 09:15 AM
wxr into 2.5i kmilenco Subaru Conversions 7 10-30-2008 08:47 PM
WRX LSD into 2.5i zavier Subaru Conversions 2 01-17-2008 10:52 AM
Scoop into 2.5i hood... mxtwoforty Interior & Exterior Modification 7 02-05-2007 01:15 AM
WRX Rack Into 2.5i? modernist Brakes, Steering & Suspension 2 04-08-2006 10:11 AM


All times are GMT -4. The time now is 07:33 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.