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Old 03-15-2001, 03:42 PM   #1
Ru fan
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Chapter/Region: NESIC
Location: Middletown, CT USA
1997 1.8L Brighton
NESIC TrackH0z member#1

Question Turbo size on US spec WRX?

With the coming of the new WRX, I have been thinking about turbo's a lot more. First-off, what is the size of the stock WRX turbo? What is it's peak out-put with this size turbo? Is this size turbo what limits the HP to 227? Is this turbo used on many other cars?
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Old 03-15-2001, 05:31 PM   #2
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2007 Scion tC
Blue or something


I couldnt say what size it is (I'd really like to see some whitesheets on the damn car), but I think the biggest restriction is the same as the other Subies: breathing fore and aft of the turbo. Time will tell when the tuning market heats up (as, oh baby, we hope it will).

Why only 227 HP? 3 cats probably don't help.

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Old 03-15-2001, 05:32 PM   #3
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E36 M3/4/5


i know it puts out 14.9lbs. max boost at 4000 RPM's
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Old 03-15-2001, 06:01 PM   #4
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It's a Mitsubishi TD04L.

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Old 03-15-2001, 06:51 PM   #5
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2002 WRB WRX Sedan
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JGard, I thought the US-Spec WRXs were limited to 13.5 psi boost.
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Old 03-15-2001, 07:31 PM   #6
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The us spec WRX is tuned identically to the japanese version the only thing different is the cats.

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Old 03-15-2001, 10:14 PM   #7
Marc Sawaya
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Yeah, pardon me if this belongs in the newbie forum, but how is it that the WRX puts out a whopping 15.9 lbs of boost, but only manages 227 hp? I don't understand it.

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Old 03-16-2001, 02:10 AM   #8
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2005 Outback 2.5 XT
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2.0L displacement and 8:1 compression ratio = less air and fuel in the first place, but the turbo more than makes up for it with the high boost pressure.

If you search for "turbo" in the old "Archive: Technical Forum Archive" section, there's plenty of fact and heresay about this topic. A more convenient search may be one for posts by "Turbo", who was actually Redline Engineering (where Edwin and I got our bare kits from, and you may understand why no one else has them).


Edit: grammar

[This message has been edited by wac (edited March 16, 2001).]
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