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FB25DI - 2.5L Non-Turbo Direct Injection (2019+)

Technical discussion of the new 2019+ 2.5L Direction Injection naturally aspirated (N/A) powerplant, bolt-on power adders, exhaust options, etc.
372 50.4K
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  • 50.4K

FB25 - 2.5L Non-Turbo (2011- 2018)

Technical discussion of the 2011 - 2018 2.5L naturally aspirated (N/A) powerplant, bolt-on power adders, exhaust options, etc.
15.7K 4.8M
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  • 4.8M

FA20DIT - 2.0L Direct-Injection/Turbo (2014-2018)

Technical discussion of the 2.0L direct-injected/turbocharged engine and any engine and exhaust-related modifications.
13.7K 4M
  • 13.7K
  • 4M

EJ25 - 2.5L Non-Turbo (1998-2010)

Technical discussion of the 2.5L naturally aspirated (N/A) powerplant, bolt-on power adders, exhaust options, etc.
43.3K 16.7M
  • 43.3K
  • 16.7M

EJ25 - 2.5L Turbocharged (2004-2013)

Technical discussion of the 2.5L turbocharged engine and any engine and exhaust-related modifications.
75.9K 17.7M
  • 75.9K
  • 17.7M

EJ20 - 2.0L Non-Turbo

Technical discussion of the 2.0L naturally aspirated (N/A) powerplant, bolt-on power adders, exhaust options, etc.
999 599K
  • 999
  • 599K

EJ20 - 2.0L Turbocharged

Technical discussion of the 2.0L turbocharged engine and any engine and exhaust-related modifications.
3.9K 1.6M
  • 3.9K
  • 1.6M

EE20 - 2.0L Diesel

Technical discussion of the 2.0L boxer diesel engine and any engine and exhaust-related modifications.
3K 1.5M
  • 3K
  • 1.5M

FB20 - 2.0L Non-Turbo (2011+ Euro-spec)

Technical discussion of the new 2011+ Euro-spec 2.0L naturally aspirated (N/A) powerplant, bolt-on power adders, exhaust options, etc.
36 44.3K
  • 36
  • 44.3K

Auto Stop / Start

Discussions around this latest feature
356 96.7K
  • 356
  • 96.7K

Cooling Systems

Technical discussions relating to cooling systems of all models.
1.4K 389K
  • 1.4K
  • 389K

Motor Conversions

Technical discussion on engine conversions or swaps.
4.4K 2.2M
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  • 2.2M
(All Years) Sticky The "best" motor oils - independently tested and ranked by wear protection
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Sticky Please post in the correct engine subforums!
1
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 by davidszasz91
Turboing a non turbo?
1
125
 by 2.5x_sleeper
('06-'08) screeching noise when accelerating, but not when revving in park
–
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N/A
('03-'05) 04 XT - P0420 - o2 Sensor?
–
–
N/A
('09-'13) Good idea to install 2015 STI catback exhaust on 09 NA Foz???
10
444
 by Beercheese
('09-'13) Excessive Back pressure
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300
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383K
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FORESTER STAGE 2 PACK
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N/A
('03-'05) Bracket, where does it go?
3
297
 by Bstar
('01-'02) H6 Valve and Bucket Adjustment
0
266
 by mgord
anyone have a soundclip of the LP aventure axle back exhaust?
0
296
 by bevans555
STI exhaust question
0
308
 by Brandon_fxt
Front Heat Shields
0
297
 by Theseus161
('09-'13) When did 2.0l petrol engine get a Camchain?
0
361
 by Wulbert
(All Years) How to "lock" your Fumoto valve (oil drain plug).
2
25
8K
 by Osceolakidt00!
Engine Break-In - Lawyers or Engine Builder Proven Methods
2
36
2K
 by RawLand
('14-'18) Code 0300 2015 Forester
1
364
 by bbottomley
('19+) LaChute Performance Axle Back, or any other cat-back exhausts, warranty safe?
1
376
 by hoshie
(All Years) Blackstone Labs Subaru oil test
2
363
 by RawLand
('14-'18) Thermal Images of Engine / Rear Diff.
0
273
 by 0D1USA
Engine and Exhaust Technical discussion of engine and exhaust-related topics - stock and aftermarket. Turbo, N/A, a...
168.9K posts
53.6M views
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