Engine Modifications
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Below you will find a list of discussions in the Engine Modifications forums at the ClubWRX Forum - Subaru Impreza WRX and STi Community and Forums. The Engine Modifications forum Flat-fours and turbochargers are what set the WRX apart from the rest. Talk about them and the latest aftermarket parts here.

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  1. Engine Performance Discussion Specific to Higher Altitudes

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    Forum Statistics:

    • Threads: 48
    • Posts: 681

    Last Post:

    TECH: High altitude and octane Go to last post

    by

    11-06-2014, 06:28 PM

  1. Sticky Thread Sticky: Exhaust FAQ

    Started by EJ257, 03-30-2010 04:30 PM
    9 Pages
    1 2 3 4 5 ... 9
    • Replies: 122
    • Views: 48,087
    Today, 12:14 PM Go to last post
  2. Sticky Thread Sticky: "The BIG BOV thread" (Where all bov question threads get merged)

    Started by p7r4e7y, 05-21-2001 08:34 AM
    790 Pages
    1 2 3 4 5 ... 790
    • Replies: 11,839
    • Views: 894,328
    11-12-2014, 11:35 AM Go to last post
  3. Sticky Thread Sticky: Fuel System 101 FAQ

    Started by adam@kronosperformance, 06-30-2011 12:16 PM
    • Replies: 6
    • Views: 12,332
    11-01-2014, 12:00 AM Go to last post
  4. Sticky Thread Sticky: WARNING FOR BUYING CATTED DOWNPIPES!!!

    Started by Sinister, 10-27-2010 12:54 PM
    7 Pages
    1 2 3 4 5 ... 7
    • Replies: 92
    • Views: 39,724
    10-03-2014, 11:26 AM Go to last post
  5. Sticky Thread Sticky: $5 and 5 minutes to a better running car :)

    Started by Big Sky WRX, 05-06-2006 04:02 PM
    9 Pages
    1 2 3 4 5 ... 9
    • Replies: 122
    • Views: 45,918
    zax
    08-11-2014, 09:30 AM Go to last post
  6. Sticky Thread Sticky: First Modifications - what to do and not to do

    Started by mycologist, 01-25-2010 09:05 PM
    14 Pages
    1 2 3 4 5 ... 14
    • Replies: 197
    • Views: 123,190
    07-20-2014, 07:02 AM Go to last post
  7. Sticky Thread Sticky: Exhaust Video/Sound Clips

    Started by TurnWRX, 03-29-2004 11:37 PM
    38 Pages
    1 2 3 4 5 ... 38
    • Replies: 555
    • Views: 347,578
    06-27-2014, 02:38 PM Go to last post
  8. Sticky Thread Sticky: Water/Methanol Injection FAQ

    Started by EJ257, 04-06-2010 09:04 AM
    2 Pages
    1 2
    • Replies: 29
    • Views: 31,890
    01-22-2014, 07:56 PM Go to last post
  9. Sticky Thread Sticky: Blowoff Valve (BOV) FAQ

    Started by Sinister, 07-11-2013 11:55 PM
    • Replies: 2
    • Views: 6,512
    zax
    07-19-2013, 09:13 AM Go to last post
  10. Sticky Thread Sticky: Intake FAQ

    Started by EJ257, 04-09-2013 10:07 PM
    • Replies: 0
    • Views: 5,690
    04-09-2013, 10:07 PM Go to last post
  11. Sticky Thread Sticky: The BIG Intake Manifold/TGV/Phenolic Spacer FAQ!

    Started by zax, 11-20-2012 02:57 PM
    • Replies: 0
    • Views: 3,829
    zax
    11-20-2012, 02:57 PM Go to last post
  12. Sticky Thread Moved: BIG Intake Manifold FAQ!

    Started by zax, 11-20-2012 02:51 PM
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  13. Sticky Thread Sticky: SPT has released the new CBE's for 08 WRX 5dr & 4dr.

    Started by Weasel 555, 04-02-2008 06:35 AM
    6 Pages
    1 2 3 4 5 ... 6
    • Replies: 85
    • Views: 25,712
    01-02-2011, 03:58 PM Go to last post
  14. Post Sticky Thread Sticky: I want 400WHP!!!1!juan!

    Started by TheJ, 09-27-2009 07:51 AM
    • Replies: 0
    • Views: 20,660
    09-27-2009, 07:51 AM Go to last post
  15. Sticky Thread Sticky: Subaru Catch All TSB Regarding Modding

    Started by 302@12psi, 08-12-2007 08:43 AM
    • Replies: 8
    • Views: 13,297
    08-12-2007, 05:41 PM Go to last post
  16. Sticky Thread Sticky: Engine Performance FAQ [[[READ ME]]]

    Started by ebr0t, 09-28-2004 07:59 PM
    • Replies: 1
    • Views: 88,229
    09-29-2004, 10:25 PM Go to last post
  1. Catback exhaust

    Started by Wrx>>, 11-24-2014 05:16 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 281
    Yesterday, 02:53 PM Go to last post
    • Replies: 36
    • Views: 554
    Yesterday, 09:25 AM Go to last post
  2. Removing A/C... Horsepower gain?

    Started by TurboWill, 12-02-2013 07:09 PM
    • Replies: 5
    • Views: 820
    11-25-2014, 02:30 PM Go to last post
  3. 2014 Impreza WRX motor type?

    Started by bunch, 11-20-2014 08:49 AM
    4 Pages
    1 2 3 4
    • Replies: 45
    • Views: 852
    11-25-2014, 01:44 PM Go to last post
  4. Version 9 swap questions

    Started by Kleen wrx, 11-23-2014 11:03 AM
    • Replies: 10
    • Views: 161
    11-25-2014, 09:17 AM Go to last post
  5. Blackwidow aftermarket muffler

    Started by Subie_sonny, 11-18-2014 11:46 PM
    • Replies: 4
    • Views: 172
    11-24-2014, 06:44 AM Go to last post
  6. 08+ Forged Internals

    Started by Te-Wrx, 11-23-2014 10:51 AM
    • Replies: 3
    • Views: 110
    11-23-2014, 05:44 PM Go to last post
  7. 2015 WRX Drop-in Filters Help

    Started by mioutback4, 11-23-2014 02:38 PM
    • Replies: 2
    • Views: 118
    11-23-2014, 03:05 PM Go to last post
  8. 2015 wrx mods without voiding warranty?

    Started by Dwill2015wrx, 11-23-2014 12:43 AM
    • Replies: 3
    • Views: 199
    11-23-2014, 02:14 PM Go to last post
  9. NO BOOST 2011 WRX?!??!?!?

    Started by Moehejazi, 11-22-2014 05:49 PM
    • Replies: 1
    • Views: 117
    11-22-2014, 06:26 PM Go to last post
  10. School me. td04-19t '05 Wrx

    Started by 4eat05, 11-03-2014 09:01 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 600
    11-20-2014, 02:50 PM Go to last post
  11. Idle problem

    Started by Daltonp45, 11-19-2014 08:45 PM
    • Replies: 4
    • Views: 124
    11-20-2014, 08:03 AM Go to last post
  12. HP gain from different cat on 2015

    Started by guzziman, 11-07-2014 03:44 PM
    • Replies: 10
    • Views: 441
    11-19-2014, 02:13 PM Go to last post
  13. Newbie turbo questions

    Started by tlinnik, 11-12-2014 02:33 PM
    • Replies: 12
    • Views: 445
    11-17-2014, 11:09 AM Go to last post
  14. Moved: Should I buy this turbo?

    Started by tlinnik, 11-17-2014 06:47 AM
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  15. motor mounts

    Started by ssbmx90, 11-13-2014 06:13 PM
    • Replies: 1
    • Views: 142
    11-13-2014, 06:43 PM Go to last post
  16. 2004 WRX Oil in Intercooler?

    Started by wingman358, 11-09-2014 11:43 PM
    • Replies: 12
    • Views: 322
    zax
    11-12-2014, 11:31 AM Go to last post
  17. P0171

    Started by Jimgon93, 11-06-2014 12:20 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 423
    11-10-2014, 05:40 PM Go to last post
  18. Question Will adding a K&N be advisable on my stock 2001 Impreza WRX STI

    Started by tuka16, 09-26-2014 01:21 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 559
    11-10-2014, 03:07 PM Go to last post
  19. Question Little or no boost :/

    Started by mikeicke93, 08-07-2014 11:09 PM
    13 Pages
    1 2 3 4 5 ... 13
    • Replies: 189
    • Views: 3,984
    11-10-2014, 05:41 AM Go to last post
  20. The question: Can I run e85

    Started by Sal.LV93, 11-07-2014 10:44 PM
    • Replies: 6
    • Views: 244
    11-10-2014, 02:26 AM Go to last post
  21. Transmission mount

    Started by TownLine500, 11-08-2014 03:44 PM
    • Replies: 0
    • Views: 144
    11-08-2014, 03:44 PM Go to last post
  22. Killer B ultimate oil pickup

    Started by TownLine500, 11-06-2014 01:20 PM
    2 Pages
    1 2
    • Replies: 18
    • Views: 380
    11-07-2014, 09:37 AM Go to last post
  23. Cold Air Intake questions

    Started by williedibo, 11-03-2014 05:16 PM
    • Replies: 5
    • Views: 306
    11-05-2014, 06:18 PM Go to last post
  24. Tune needed?

    Started by Ed Edd n Eddy, 11-03-2014 12:53 PM
    • Replies: 12
    • Views: 351
    11-05-2014, 04:47 PM Go to last post
  25. EGT Sensor?

    Started by CLR7, 02-05-2010 04:54 AM
    • Replies: 10
    • Views: 5,134
    11-05-2014, 09:53 AM Go to last post
  26. Exhaust Decisions

    Started by J_saucy, 11-04-2014 06:50 PM
    • Replies: 6
    • Views: 338
    zax
    11-05-2014, 06:59 AM Go to last post
  27. 2008 WRX - how much power can it handle/produce?

    Started by xtremez2k, 06-07-2010 01:23 AM
    4 Pages
    1 2 3 4
    • Replies: 58
    • Views: 15,171
    11-05-2014, 05:36 AM Go to last post
  28. 02 wrx

    Started by nickrich53, 11-04-2014 11:47 AM
    • Replies: 5
    • Views: 221
    11-04-2014, 03:55 PM Go to last post
  29. Cobb tbe question

    Started by Marl's Rex, 11-02-2014 02:28 PM
    2 Pages
    1 2
    • Replies: 28
    • Views: 563
    11-04-2014, 12:41 PM Go to last post
  30. Stage 1 Check engine light

    Started by williedibo, 10-19-2014 02:36 PM
    • Replies: 6
    • Views: 364
    11-03-2014, 05:32 PM Go to last post
  31. Air Oil Seperator

    Started by TownLine500, 11-02-2014 02:49 PM
    • Replies: 14
    • Views: 322
    11-03-2014, 02:06 PM Go to last post
  32. up pipe question..

    Started by mikestripes, 10-26-2014 08:46 PM
    • Replies: 8
    • Views: 308
    11-03-2014, 08:37 AM Go to last post
  33. Attn '02-'05 WRX Owners: The Importance of the Uppipe Mod

    Started by EJ257, 01-26-2010 09:02 AM
    11 Pages
    1 2 3 4 5 ... 11
    • Replies: 156
    • Views: 66,871
    11-02-2014, 09:11 PM Go to last post
  34. 2.2K Ohm Resistor Mod

    Started by KurleeDaddeeWRX, 09-01-2002 04:34 PM
    6 Pages
    1 2 3 4 5 ... 6
    • Replies: 85
    • Views: 56,515
    11-02-2014, 09:10 PM Go to last post

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