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Old 11-24-2009, 09:56 AM   #1
Autoxsi
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Join Date: Aug 2009
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2008 STi Hatchback
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Default Sti/WRX/Legacy/Forester etc.. turbo parts compatibility?

Was not sure where to look. I've done a search but really couldn't find what I was looking for.
I just bought my wife a 2010 Forester 2.5X Single overhead cam base 4 speed model and used the cash for clunkers deal. Keep in mind, at the time, we were on a budget at the time. Since then I've sold two of my other cars and was thinking about upgrading the wife's car with some bolt-on turbo parts. I didn't want to spend $3500+ on an AVO kit.

My question is, do any of the STi/WRX/Legacy/Forester XT turbo parts bolt right up to the 2.5X Single Overhead cam motor? If they do, I'm sure I can get a used wrx turbo/piping/intercooler/ecu for a very good price. Or even an turbo from another 2009/2010 Forester. Anyone have any info to this?
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Old 11-24-2009, 01:13 PM   #2
rivman05
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Milano Red

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More than likely...there alot like legos. The heads will fit, u might need a turbo cross member tho for the up pipe, but ud have to ask around. The x-member is the only thing I can think of that you might have an issue with, I havent looked underneath one so I have no clue. All the other things will bolt.

gabe
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Old 11-24-2009, 02:16 PM   #3
Bluefoton
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Join Date: Feb 2007
Chapter/Region: E. Canada
Location: Quebec, QC
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now with a HID retrofit

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Oh boy. You need to do a LOT more reading on that. Here, and check rs25.com too.

First, it's not just a question of bolting on turbos from the F/I models on your engine. A WRX is NOT a 2.5i with a factory kit on it. There are internals, there is EM, and quite a few other complicated acronyms to deal with.

Second, did you think about utterly voiding your warranty?

Third, even IF everything is done perfectly (and there aren't crowds of those who did it), your engine reliability and expected lifetime will plunge.

Bottom line, FI on NA engines is done by experienced enthusiast who will enjoy the work as much as the results. Takes time, and $, depending on your manual labour abilities. For a reliable option, consider an engine swap. Or selling the 2.5X and buying the turbo.

Above all, read, read, read.
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Old 11-24-2009, 02:24 PM   #4
rivman05
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He had em encluded but i did over look internals. I dont know if the 2.5 in the Forester is semi or open but willing to bet open deck. How much boost are you planning on running Auto? It takes time to plan it all out, Im doing my 95 2.2 to a Version 4 STI motor and its taken me a year to source everything and get it all ready to go, search for forester builds, theres been a few here and there. Also check out the forester forum, and the rs site. I got a lot help from there and here. There are a lot of things to think about.

Gabe
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Old 11-24-2009, 09:46 PM   #5
Autoxsi
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I've removed and installed a motor into a 98' legacy GT before. I've rebuilt a couple of Civic Si. I have a little mechanical experience but can do bolt-on parts for the forester. I plan on adding this when the warranty runs out. Who cares about warranty these days anymore....lol, j/p, my wife does.
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