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IWSTI Engine & Drivetrain
2.5 Liter/Litre Factory Motor
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GR-Exhausts
GD-Exhausts
Discuss anything related to the exhaust system, like muffler, catback, and turboback exhaust systems.
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Sticky
Compression-Leakdown basic information
got2boostit2
Jun 30, 2013
12
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3 mo ago
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AVCS Gear Cleaning Guide! (Read this if you spun a bearing!)
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Apr 5, 2015
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The Official STi engine Venting, A/O Separators, and Catch Cans Thread!!
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Dec 11, 2008
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Your answer to "I want 400whp" (or more?!)
fourseasonsandles
Dec 27, 2011
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154
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Jan 6, 2022
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Read this before you create a new thread about BOVs (Blow-off valves)
nandanrp
Mar 21, 2006
6
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159
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May 26, 2020
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Motor Oil - All Chapters, Inclusive -Hat Tip to Ferrarichat.com
thrlskr
Feb 19, 2007
2
3
40
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Everything you need to know about E85
BAD STI
Sep 24, 2010
4
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Extremely good info for first time turbo owners (Determining Turbo Serviceability)
Ursalog
Aug 9, 2012
18
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Comprehensive Subaru CEL Code List (XLS File Attached)
Muffnbluff
Feb 15, 2008
2
26
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Jul 4, 2012
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2.5 turbo hyped
Sticky
UPDATED 03/03/10: Planning a turbo build? This is roughly what it will cost you.
TheLimitedProject
Nov 25, 2007
4
5
6
117
95K
Jan 5, 2012
by
R3VOLUTION
S
Pushing coolant
Skills McNasty
5 h ago
1
56
4 h ago
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Jay11STI
Coolant Color w/ Redline Water Wetter - 2017 Subaru STi
Tom17sti
1 d ago
8
182
7 h ago
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Ignition 15amp Fuse Blew Randomly??
coolgraysti
5 d ago
8
303
1 d ago
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K
CHECK ENGINE HELP P2441
kylethomas
5 d ago
6
329
1 d ago
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kylethomas
Z
Do I have a broken mount?
zerohero
3 d ago
2
211
2 d ago
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lowbee
T
Question about small blue cap in engine bay
The Reaper 975
Mar 25, 2006
10
3K
2 d ago
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Mdowdy93
Q
Oil cooler mounting position. Does it matter?
Qkizz
9 d ago
6
552
4 d ago
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Qkizz
D
Priming fuel pump longer start?
Dylan daly
4 d ago
0
174
4 d ago
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Water pump hole…drilled through to oil galley
Derekpyle3
1 mo ago
5
692
4 d ago
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awenthol
J
Iag vs torque solution TGV
JohnSub2013sti
17 d ago
2
30
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S
Power Steering Pump Pulley Stopping???
sjsomarriba
Aug 2, 2011
13
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6 d ago
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Zeppfan1
Tomei catless downpipe + invidi r400 catback
twang2931
26 d ago
16
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9 d ago
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Karlot
Lost clutch after pitch mount replacement
whitneyalan80
13 d ago
7
485
11 d ago
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whitneyalan80
B
Does VA Top Mount Fit GR
bobbybouchet
15 d ago
5
325
14 d ago
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bobbybouchet
D
TGV delete question
djnrg98
Feb 24, 2010
2
26
32K
14 d ago
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Mich13sti
D
Need help naming this exhaust!
Dylan daly
16 d ago
18
600
15 d ago
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Dylan daly
I
Overheating Issue
Itsmyfirsttime
18 d ago
16
490
15 d ago
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Itsmyfirsttime
L
Piston markings? A vs.B? What do these mean?
linkbeat
Mar 15, 2009
16
24K
17 d ago
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axlyaelyara
D
2006 sti Af sensor 3 location?
Dylan daly
17 d ago
0
135
17 d ago
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cobb redline intake vs cobb sf intake
twang2931
18 d ago
13
476
17 d ago
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Meech
M
Stock Motor/Fuel injectors
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Aug 17, 2021
18
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17 d ago
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A
TGV Delete
aakrusen
Jan 10, 2009
2
23
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20 d ago
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Some spark plug listings for LFR7AIX show it doesn't fit my STI
michael220
24 d ago
9
440
21 d ago
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S
S3 or S2 cams with a G35-900, and what A/R?
Saeven
26 d ago
2
27
784
23 d ago
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mheyman
Garrett Gen 2 turbos
Voodoo Rufus
Dec 13, 2016
7
8
9
176
126K
23 d ago
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Karlot
D
Sti not hitting target boost no leaks?
Dylan daly
29 d ago
2
38
974
24 d ago
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Dylan daly
Used invidia r400 bolt and screws questions
twang2931
26 d ago
5
258
26 d ago
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GrayMetallic12
J
Reading subaru DCCD Codes
JohnSub2013sti
1 mo ago
3
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27 d ago
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JohnSub2013sti
D
2006 sti weird startup sound
Dylan daly
1 mo ago
15
780
28 d ago
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mheyman
D
2006 Sti boost leak
Dylan daly
1 mo ago
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28 d ago
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Dylan daly
T
Question About Fuel Lines.
TMTFish
29 d ago
4
337
29 d ago
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Leemanfor
D
Boost leak whistle?
Dylan daly
3 mo ago
2
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871
29 d ago
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Karlot
G
Car feels slow
Gruff Gnome
Oct 19, 2014
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22
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1 mo ago
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Floridaman_1111
S
Interchangable parts , Intake pipe / Fuel rails
STI 178
1 mo ago
1
214
1 mo ago
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Karlot
R
Oil Temp sender options
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Oct 9, 2019
7
1K
1 mo ago
by
killerbmotorsport
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2.5 Liter/Litre Factory Motor
Discuss the Subaru 2.5L factory motor. Please post exhaust related discussion in the exhaust forum.
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