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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    • Threads: 48
    • Posts: 681

    Last Post:

    TECH: High altitude and octane Go to last post

    by

    11-06-2014, 05:28 PM

  1. Sticky Thread Sticky: "The BIG BOV thread" (Where all bov question threads get merged)

    Started by p7r4e7y, 05-21-2001 07:34 AM
    792 Pages
    1 2 3 4 5 ... 792
    • Replies: 11,874
    • Views: 937,378
    02-27-2015, 12:02 PM Go to last post
  2. Sticky Thread Sticky: Exhaust Video/Sound Clips

    Started by TurnWRX, 03-29-2004 10:37 PM
    38 Pages
    1 2 3 4 5 ... 38
    • Replies: 557
    • Views: 356,720
    03-22-2015, 03:35 PM Go to last post
  3. Sticky Thread Sticky: First Modifications - what to do and not to do

    Started by mycologist, 01-25-2010 08:05 PM
    14 Pages
    1 2 3 4 5 ... 14
    • Replies: 208
    • Views: 141,108
    Yesterday, 01:45 PM Go to last post
  4. Sticky Thread Sticky: Exhaust FAQ

    Started by EJ257, 03-30-2010 03:30 PM
    10 Pages
    1 2 3 4 5 ... 10
    • Replies: 135
    • Views: 55,196
    01-15-2015, 09:17 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 03:02 PM
    9 Pages
    1 2 3 4 5 ... 9
    • Replies: 124
    • Views: 52,425
    02-12-2015, 03:16 AM Go to last post
  6. Sticky Thread Sticky: WARNING FOR BUYING CATTED DOWNPIPES!!!

    Started by Sinister, 10-27-2010 11:54 AM
    7 Pages
    1 2 3 4 5 ... 7
    • Replies: 93
    • Views: 45,580
    12-09-2014, 03:43 PM Go to last post
  7. Sticky Thread Sticky: SPT has released the new CBE's for 08 WRX 5dr & 4dr.

    Started by Weasel 555, 04-02-2008 05:35 AM
    6 Pages
    1 2 3 4 5 ... 6
    • Replies: 85
    • Views: 27,265
    01-02-2011, 02:58 PM Go to last post
  8. Sticky Thread Sticky: Water/Methanol Injection FAQ

    Started by EJ257, 04-06-2010 08:04 AM
    2 Pages
    1 2
    • Replies: 29
    • Views: 35,159
    01-22-2014, 06:56 PM Go to last post
  9. Sticky Thread Sticky: Subaru Catch All TSB Regarding Modding

    Started by 302@12psi, 08-12-2007 07:43 AM
    • Replies: 8
    • Views: 13,884
    08-12-2007, 04:41 PM Go to last post
  10. Sticky Thread Sticky: Fuel System 101 FAQ

    Started by adam@kronosperformance, 06-30-2011 11:16 AM
    • Replies: 7
    • Views: 13,944
    01-10-2015, 09:47 AM Go to last post
  11. Sticky Thread Sticky: Blowoff Valve (BOV) FAQ

    Started by Sinister, 07-11-2013 10:55 PM
    • Replies: 2
    • Views: 8,280
    zax
    07-19-2013, 08:13 AM Go to last post
  12. Sticky Thread Sticky: Engine Performance FAQ [[[READ ME]]]

    Started by ebr0t, 09-28-2004 06:59 PM
    • Replies: 1
    • Views: 90,193
    09-29-2004, 09:25 PM Go to last post
  13. Sticky Thread Moved: BIG Intake Manifold FAQ!

    Started by zax, 11-20-2012 01:51 PM
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  14. Sticky Thread Sticky: The BIG Intake Manifold/TGV/Phenolic Spacer FAQ!

    Started by zax, 11-20-2012 01:57 PM
    • Replies: 0
    • Views: 4,623
    zax
    11-20-2012, 01:57 PM Go to last post
  15. Post Sticky Thread Sticky: I want 400WHP!!!1!juan!

    Started by TheJ, 09-27-2009 06:51 AM
    • Replies: 0
    • Views: 21,861
    09-27-2009, 06:51 AM Go to last post
  16. Sticky Thread Sticky: Intake FAQ

    Started by EJ257, 04-09-2013 09:07 PM
    • Replies: 0
    • Views: 6,881
    04-09-2013, 09:07 PM Go to last post
  1. stage 1 review

    Started by nsibanez, 10-18-2014 10:39 PM
    8 Pages
    1 2 3 4 5 ... 8
    • Replies: 110
    • Views: 4,400
    Yesterday, 12:37 AM Go to last post
  2. 2015 wrx mods before tuning

    Started by huitt06, 09-07-2014 12:50 PM
    4 Pages
    1 2 3 4
    • Replies: 53
    • Views: 10,536
    03-06-2015, 08:27 PM Go to last post
    • Replies: 46
    • Views: 3,040
    03-18-2015, 11:10 AM Go to last post
  3. i want the subaru growl!!!

    Started by rustyshackleford, 05-13-2014 06:00 PM
    3 Pages
    1 2 3
    • Replies: 35
    • Views: 3,795
    02-17-2015, 01:15 AM Go to last post
  4. WRX Intakes

    Started by Subi_Lifestyle, 02-20-2015 03:17 PM
    3 Pages
    1 2 3
    • Replies: 30
    • Views: 1,010
    02-27-2015, 11:36 AM Go to last post
  5. ETS 2015 Subaru WRX Air Intake Kit

    Started by wgokc, 01-30-2015 05:18 PM
    2 Pages
    1 2
    • Replies: 29
    • Views: 1,728
    03-12-2015, 09:57 AM Go to last post
  6. PW tmic install without tune?

    Started by WRX-maniac, 03-07-2015 01:53 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 507
    03-12-2015, 11:04 AM Go to last post
  7. 2015 WRX - Milk Jug Delete?

    Started by wrxatx, 09-12-2014 09:08 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 6,288
    03-12-2015, 05:24 AM Go to last post
  8. Down pipe

    Started by nfisher1986, 03-19-2015 09:22 AM
    2 Pages
    1 2
    • Replies: 19
    • Views: 388
    03-19-2015, 01:50 PM Go to last post
  9. New Parts

    Started by Chance1218, 02-19-2015 09:04 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 602
    02-23-2015, 04:29 PM Go to last post
  10. What comes after Stage 2?

    Started by mdawson808, 03-09-2015 04:01 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 571
    03-10-2015, 02:33 PM Go to last post
  11. bugeye wrx build questions

    Started by natesopny, 03-06-2015 11:26 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 380
    03-07-2015, 02:51 PM Go to last post
  12. 02 WRX Boost up to 18 psi on Cobb Eco-tune

    Started by Yobfriend, 03-20-2015 07:39 AM
    2 Pages
    1 2
    • Replies: 16
    • Views: 428
    03-20-2015, 06:26 PM Go to last post
  13. cat or catless???

    Started by WRX_2oh3, 03-02-2015 03:01 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 477
    03-02-2015, 06:47 PM Go to last post
  14. Exhaust Upgrades

    Started by MikeLowrey123, Yesterday 06:25 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 226
    Today, 10:29 AM Go to last post
  15. 2015 WRX CVT fuel map

    Started by mhayes, 02-03-2015 12:30 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 1,114
    02-26-2015, 12:30 AM Go to last post
  16. Cool 2015 WRX MOD

    Started by subidoo87, 03-11-2015 03:00 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 778
    03-12-2015, 07:53 AM Go to last post
  17. New owner 13 wrx

    Started by nfisher1986, 02-12-2015 02:06 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 501
    02-14-2015, 02:24 PM Go to last post
  18. 2013 WRX vs GT500

    Started by Whitt11, 03-02-2015 08:41 PM
    • Replies: 14
    • Views: 433
    03-03-2015, 10:32 AM Go to last post
  19. Wondering if I'm in the right direction.

    Started by Tony2014wrx, 02-24-2015 03:51 PM
    • Replies: 14
    • Views: 459
    02-25-2015, 02:49 PM Go to last post
  20. Engine rebuild

    Started by voodoostrykr, 03-28-2015 12:09 PM
    • Replies: 13
    • Views: 196
    Yesterday, 07:25 AM Go to last post
  21. e85 question!

    Started by 11wrxCO, 02-13-2015 03:30 PM
    • Replies: 13
    • Views: 368
    02-14-2015, 02:20 PM Go to last post
  22. Any quiet aftermarket downpipes?

    Started by AJ_2002, 02-28-2015 12:45 PM
    • Replies: 12
    • Views: 371
    03-01-2015, 11:12 AM Go to last post
  23. STi intercooler fitment

    Started by Bak3rSkat3r, 09-21-2014 04:01 PM
    • Replies: 12
    • Views: 828
    02-23-2015, 02:28 PM Go to last post
  24. What mods next

    Started by Daltonp45, 03-23-2015 01:50 PM
    • Replies: 12
    • Views: 345
    03-25-2015, 09:52 AM Go to last post
    • Replies: 11
    • Views: 335
    03-22-2015, 12:14 PM Go to last post
    • Replies: 11
    • Views: 371
    02-13-2015, 06:28 PM Go to last post
  25. Stage 2 question, pro tune?

    Started by mdawson808, 03-07-2015 05:16 PM
    • Replies: 11
    • Views: 363
    03-07-2015, 09:08 PM Go to last post
    • Replies: 10
    • Views: 374
    02-21-2015, 12:09 PM Go to last post
  26. Best throttle body hose

    Started by TownLine500, 03-01-2015 11:10 PM
    • Replies: 10
    • Views: 253
    03-06-2015, 09:20 PM Go to last post
    • Replies: 10
    • Views: 384
    03-10-2015, 05:20 PM Go to last post
  27. Exhaust tips. 4 inch vs 3.5 inch

    Started by Subi_Lifestyle, 02-25-2015 12:49 PM
    • Replies: 9
    • Views: 431
    02-26-2015, 12:52 AM Go to last post
  28. new car fmic bov bpv question

    Started by boostinbraun, Today 03:36 AM
    • Replies: 9
    • Views: 104
    Today, 09:58 AM Go to last post
  29. Question Your thoughts on the Blouch 440XT turbocharger?

    Started by VladiWrX, 03-03-2015 06:29 AM
    • Replies: 9
    • Views: 376
    03-03-2015, 03:37 PM Go to last post
  30. The CAI for my '09 WRX

    Started by New09wrx, 03-16-2015 05:48 AM
    • Replies: 8
    • Views: 296
    03-16-2015, 11:05 AM Go to last post

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