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Old 07-21-2019, 12:05 AM   #1
Casttawayy
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Member#: 504462
Join Date: Jul 2019
Chapter/Region: E. Canada
Location: South Ontario
Default Wanting to Purchase a GC8 WRX STI. (Common Problems) (Aftermarket Support)

Thinking about Importing a GC8 WRX STI, sedan, what are common problems? and where would I buy most aftermarket parts if I chose to mod it? Not much I can find by a basic web search. But looking at if I do purchase it, I'll probably stick to Coilovers, Wheels, and maybe look into simple power mods, Exhaust/Intake/Headers/Tune ETC not looking to go crazy, but wanting to turn a few bolts for fun on the weekend.
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Last edited by Casttawayy; 07-21-2019 at 12:05 AM. Reason: change of title
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Old 07-21-2019, 12:23 AM   #2
subaru_gc8
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Member#: 29292
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
Vehicle:
2004 WRX wagon
silver

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most of the stuff is the same as the gd or the gg(wagon) 2002-2005 wrx the suspension stuff is the same as the wagons so you can use that
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Old 07-21-2019, 12:28 AM   #3
Casttawayy
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Join Date: Jul 2019
Chapter/Region: E. Canada
Location: South Ontario
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Thank you! I'll take this into account.
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Old 07-20-2020, 10:53 AM   #4
nikau
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Member#: 516603
Join Date: Jul 2020
Location: Australia
Vehicle:
2000 MY00 GC8 WRX

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I don't have an STI just a WRX, but following issues/maintenance items I've had:
  • MAF sensor goes bad, at least on the 99/00 models
  • knock sensor goes bad

  • power steering reservoir leaking (oring between reservoir and pump)
  • power steering cooler drawing in air (just need better hose clamps)
  • air con tensioner pulley bearing dry (i put in a new bearing)
  • cv boot tear
  • plastic turbo t-piece leaking (replace with brass one)

On the to-do list;
  • valve covers leaking
  • coolant crossover pipe leaking
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Old 08-15-2020, 09:04 AM   #5
feliz
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Member#: 517506
Join Date: Aug 2020
Chapter/Region: MAIC
Location: south jersey
Vehicle:
97 impreza brighto

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for the price of an import an 02-06 WRX donor car and a clean US GC8 body should be considered. in fact you can run a turbo on a MAF NA ecm and tune. just not huge boost and injectors, etc.
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Old 08-21-2020, 01:17 AM   #6
speedyHAM
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Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
Vehicle:
1996 Gutted, built
XP class Impreza L

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Quote:
Originally Posted by feliz View Post
for the price of an import an 02-06 WRX donor car and a clean US GC8 body should be considered. in fact you can run a turbo on a MAF NA ecm and tune. just not huge boost and injectors, etc.
That would be a sad substitute for a GC/GM STI using the MAF NA ecm. No where near the same power as the stock STI or power potential.

If you are deadset on a JDM STI, good luck. They are rare. If you want an awesome 2001 coupe with a 2007 EJ255 drivetrain swap, I have a friend who is looking to sell his. LMK.
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