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

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    11-06-2014, 06:28 PM

  1. Sticky Thread Sticky: Engine Performance FAQ [[[READ ME]]]

    Started by ebr0t, 09-28-2004 07:59 PM
    • Replies: 1
    • Views: 88,223
    09-29-2004, 10:25 PM Go to last post
  2. Sticky Thread Sticky: Subaru Catch All TSB Regarding Modding

    Started by 302@12psi, 08-12-2007 08:43 AM
    • Replies: 8
    • Views: 13,296
    08-12-2007, 05:41 PM Go to last post
  3. Post Sticky Thread Sticky: I want 400WHP!!!1!juan!

    Started by TheJ, 09-27-2009 07:51 AM
    • Replies: 0
    • Views: 20,657
    09-27-2009, 07:51 AM Go to last post
  4. 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: 25,710
    01-02-2011, 03:58 PM Go to last post
  5. Sticky Thread Moved: BIG Intake Manifold FAQ!

    Started by zax, 11-20-2012 02:51 PM
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  6. Sticky Thread Sticky: The BIG Intake Manifold/TGV/Phenolic Spacer FAQ!

    Started by zax, 11-20-2012 02:57 PM
    • Replies: 0
    • Views: 3,828
    zax
    11-20-2012, 02:57 PM Go to last post
  7. Sticky Thread Sticky: Intake FAQ

    Started by EJ257, 04-09-2013 10:07 PM
    • Replies: 0
    • Views: 5,685
    04-09-2013, 10:07 PM Go to last post
  8. Sticky Thread Sticky: Blowoff Valve (BOV) FAQ

    Started by Sinister, 07-11-2013 11:55 PM
    • Replies: 2
    • Views: 6,505
    zax
    07-19-2013, 09:13 AM Go to last post
  9. Sticky Thread Sticky: Water/Methanol Injection FAQ

    Started by EJ257, 04-06-2010 09:04 AM
    2 Pages
    1 2
    • Replies: 29
    • Views: 31,882
    01-22-2014, 07:56 PM Go to last post
  10. 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: 347,567
    06-27-2014, 02:38 PM Go to last post
  11. 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: 123,153
    07-20-2014, 07:02 AM Go to last post
  12. 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: 45,911
    zax
    08-11-2014, 09:30 AM Go to last post
  13. 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: 39,706
    10-03-2014, 11:26 AM Go to last post
  14. Sticky Thread Sticky: Fuel System 101 FAQ

    Started by adam@kronosperformance, 06-30-2011 12:16 PM
    • Replies: 6
    • Views: 12,321
    11-01-2014, 12:00 AM Go to last post
  15. 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: 894,264
    11-12-2014, 11:35 AM Go to last post
  16. Sticky Thread Sticky: Exhaust FAQ

    Started by EJ257, 03-30-2010 04:30 PM
    8 Pages
    1 2 3 4 5 ... 8
    • Replies: 119
    • Views: 48,016
    Yesterday, 05:39 PM Go to last post
  1. need help identifying mods

    Started by randomusername, 08-22-2014 07:46 PM
    3 Pages
    1 2 3
    • Replies: 37
    • Views: 963
    10-13-2014, 07:30 AM Go to last post
  2. Bov flutter

    Started by Z31_2011, 10-15-2014 03:48 AM
    • Replies: 11
    • Views: 235
    10-15-2014, 06:38 AM Go to last post
  3. Post Spark Plugs

    Started by damiansadlowski, 10-15-2014 09:17 AM
    • Replies: 7
    • Views: 275
    10-15-2014, 01:29 PM Go to last post
  4. FMIC vs TMIC

    Started by WRXilie, 10-08-2014 01:06 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 760
    10-16-2014, 10:25 AM Go to last post
  5. Gas mileage modifications???

    Started by AOmagman78, 05-28-2008 08:38 AM
    5 Pages
    1 2 3 4 5
    • Replies: 62
    • Views: 17,679
    10-16-2014, 09:05 PM Go to last post
  6. STi intercooler fitment

    Started by Bak3rSkat3r, 09-21-2014 05:01 PM
    • Replies: 3
    • Views: 399
    10-17-2014, 09:43 PM Go to last post
  7. replacing ecm

    Started by matty0426, 10-19-2014 05:21 AM
    • Replies: 3
    • Views: 171
    10-19-2014, 02:26 PM Go to last post
  8. 2009 5-door WRX SPT CBE Exhaust gasket needed

    Started by jamie007, 10-20-2014 11:56 AM
    • Replies: 3
    • Views: 133
    10-20-2014, 04:20 PM Go to last post
  9. Talking DP question

    Started by Brandi, 10-17-2014 01:41 AM
    • Replies: 9
    • Views: 321
    10-21-2014, 01:56 PM Go to last post
  10. tomioka racing down pipe any good?

    Started by Dom_AD, 10-18-2014 10:19 AM
    • Replies: 3
    • Views: 242
    10-21-2014, 07:57 PM Go to last post
    • Replies: 5
    • Views: 287
    10-21-2014, 09:19 PM Go to last post
  11. 08 wrx intake silencer delete

    Started by 08SubieWrx, 05-18-2008 10:03 AM
    2 Pages
    1 2
    • Replies: 26
    • Views: 10,876
    10-22-2014, 10:52 AM Go to last post
  12. Exhaust Sound Issues

    Started by Deanf2, 10-23-2014 10:14 AM
    • Replies: 3
    • Views: 169
    10-23-2014, 12:37 PM Go to last post
  13. Injector Installation Questions

    Started by MisterNBG, 10-23-2014 01:55 PM
    • Replies: 4
    • Views: 165
    10-23-2014, 03:46 PM Go to last post
  14. A favour to ask...

    Started by CrazyCanuck, 10-24-2014 11:18 AM
    • Replies: 0
    • Views: 127
    10-24-2014, 11:18 AM Go to last post
    • Replies: 10
    • Views: 441
    10-24-2014, 01:32 PM Go to last post
  15. Installing SPT Exhaust

    Started by SHAWN_7, 10-21-2014 04:51 PM
    • Replies: 9
    • Views: 302
    10-24-2014, 05:54 PM Go to last post
  16. Cats question

    Started by Rugg3r, 10-24-2014 04:38 PM
    • Replies: 9
    • Views: 230
    10-24-2014, 07:47 PM Go to last post
  17. Exhaust question

    Started by Marl's Rex, 10-20-2014 06:31 PM
    • Replies: 14
    • Views: 429
    10-24-2014, 10:04 PM Go to last post
  18. Order of modifications...

    Started by jcerillo70, 10-14-2014 11:54 AM
    3 Pages
    1 2 3
    • Replies: 33
    • Views: 1,046
    10-25-2014, 07:45 AM Go to last post
  19. Turbo flutter

    Started by 04wrxhatch, 10-26-2014 08:13 AM
    • Replies: 6
    • Views: 189
    10-26-2014, 12:24 PM Go to last post
  20. Boost problems help!!!!!!

    Started by WRX05DREW, 10-26-2014 03:44 PM
    • Replies: 1
    • Views: 138
    10-26-2014, 03:47 PM Go to last post
    • Replies: 4
    • Views: 181
    10-27-2014, 05:30 AM Go to last post
  21. Muffler advice for 2002 WRX

    Started by jestr, 10-21-2014 07:22 AM
    • Replies: 12
    • Views: 286
    10-27-2014, 11:36 AM Go to last post
  22. P0011 AVCS

    Started by 19transam81, 10-27-2014 09:53 AM
    • Replies: 2
    • Views: 164
    10-27-2014, 07:00 PM Go to last post
  23. ej255 swap into 2004 subaru wrx chassis harness

    Started by rigsk, 10-02-2014 11:34 AM
    • Replies: 6
    • Views: 312
    zax
    10-28-2014, 06:59 AM Go to last post
  24. Advice please

    Started by Abarrios528, 10-22-2014 10:12 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 618
    10-28-2014, 07:04 AM Go to last post
  25. 2008 WRX.... Can i get what i want out of this turbo?

    Started by 19transam81, 10-21-2014 04:56 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 538
    zax
    10-28-2014, 05:51 PM Go to last post
  26. Resonator delete or muffler delete.

    Started by wrxulf, 10-15-2014 06:55 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 714
    10-29-2014, 10:15 AM Go to last post
  27. Cold Air Intake help

    Started by Connor559, 10-17-2014 11:50 PM
    2 Pages
    1 2
    • Replies: 18
    • Views: 578
    10-29-2014, 11:24 PM Go to last post
  28. 2015 WRX Subispeed Quad Exhaust

    Started by Zance, 10-27-2014 06:53 PM
    • Replies: 8
    • Views: 529
    10-30-2014, 06:00 PM Go to last post
  29. Cool What next for my 03 wrx?

    Started by vaugghann, 10-30-2014 05:43 PM
    • Replies: 5
    • Views: 222
    10-31-2014, 09:35 AM Go to last post
  30. FMIC TO TMIC QUESTION

    Started by vaugghann, 10-31-2014 09:50 AM
    • Replies: 5
    • Views: 173
    10-31-2014, 10:36 AM Go to last post
  31. cat delete help

    Started by wrx_hatch, 10-31-2014 11:17 AM
    2 Pages
    1 2
    • Replies: 23
    • Views: 345
    10-31-2014, 07:23 PM Go to last post
  32. stage 1 review

    Started by nsibanez, 10-18-2014 11:39 PM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 919
    11-01-2014, 07:55 PM Go to last post

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