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: 49
    • Posts: 687

    Last Post:

    Car stalling? Go to last post

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    06-26-2016, 11:23 PM

  1. 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: 124
    • Views: 73,952
    02-12-2015, 04:16 AM 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
    798 Pages
    1 2 3 4 5 ... 798
    • Replies: 11,957
    • Views: 1,114,949
    zax
    10-30-2016, 01:04 AM Go to last post
  3. Sticky Thread Moved: BIG Intake Manifold FAQ!

    Started by zax, 11-20-2012 02:51 PM
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  4. Sticky Thread Sticky: Blowoff Valve (BOV) FAQ

    Started by Sinister, 07-11-2013 11:55 PM
    • Replies: 2
    • Views: 15,322
    zax
    07-19-2013, 09:13 AM Go to last post
  5. Sticky Thread Sticky: Engine Performance FAQ [[[READ ME]]]

    Started by ebr0t, 09-28-2004 07:59 PM
    • Replies: 1
    • Views: 99,793
    09-29-2004, 10:25 PM Go to last post
  6. Sticky Thread Sticky: Exhaust FAQ

    Started by EJ257, 03-30-2010 04:30 PM
    11 Pages
    1 2 3 4 5 ... 11
    • Replies: 151
    • Views: 82,162
    09-12-2016, 04:03 PM 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: 569
    • Views: 401,999
    08-25-2016, 10:58 PM Go to last post
  8. Sticky Thread Sticky: First Modifications - what to do and not to do

    Started by mycologist, 01-25-2010 09:05 PM
    16 Pages
    1 2 3 4 5 ... 16
    • Replies: 235
    • Views: 249,577
    11-24-2015, 09:58 PM Go to last post
  9. Sticky Thread Sticky: Fuel System 101 FAQ

    Started by adam@kronosperformance, 06-30-2011 12:16 PM
    • Replies: 7
    • Views: 20,491
    01-10-2015, 10:47 AM Go to last post
  10. Post Sticky Thread Sticky: I want 400WHP!!!1!juan!

    Started by TheJ, 09-27-2009 07:51 AM
    • Replies: 0
    • Views: 26,415
    09-27-2009, 07:51 AM Go to last post
  11. Sticky Thread Sticky: Intake FAQ

    Started by EJ257, 04-09-2013 10:07 PM
    • Replies: 0
    • Views: 11,196
    04-09-2013, 10:07 PM Go to last post
  12. 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: 30,666
    01-02-2011, 03:58 PM Go to last post
  13. Sticky Thread Sticky: Subaru Catch All TSB Regarding Modding

    Started by 302@12psi, 08-12-2007 08:43 AM
    • Replies: 8
    • Views: 15,534
    08-12-2007, 05:41 PM Go to last post
  14. Sticky Thread Sticky: The BIG Intake Manifold/TGV/Phenolic Spacer FAQ!

    Started by zax, 11-20-2012 02:57 PM
    • Replies: 0
    • Views: 7,490
    zax
    11-20-2012, 02:57 PM Go to last post
  15. 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: 94
    • Views: 73,175
    05-11-2015, 01:33 PM Go to last post
  16. Sticky Thread Sticky: Water/Methanol Injection FAQ

    Started by EJ257, 04-06-2010 09:04 AM
    2 Pages
    1 2
    • Replies: 29
    • Views: 49,107
    01-22-2014, 07:56 PM Go to last post
  1. $Cost to make reliable 400 whp 2017 STI?

    Started by TheZman, 09-20-2016 04:55 AM
    3 Pages
    1 2 3
    • Replies: 35
    • Views: 1,487
    10-29-2016, 10:09 PM Go to last post
    • Replies: 8
    • Views: 270
    11-15-2016, 07:21 PM Go to last post
    • Replies: 6
    • Views: 149
    12-09-2016, 07:18 PM Go to last post
  2. 2007 Wrx modification plans

    Started by Robbie7c, 11-16-2016 11:04 AM
    • Replies: 1
    • Views: 123
    11-16-2016, 12:00 PM Go to last post
  3. 2008 wrx engine knock time to mod?

    Started by 01amatti, 10-25-2016 05:01 AM
    • Replies: 4
    • Views: 185
    10-31-2016, 02:06 AM Go to last post
  4. 2009 wrx. Sti swap. . .

    Started by Nickgoose5454, 11-21-2016 10:02 PM
    • Replies: 6
    • Views: 158
    12-02-2016, 02:31 PM Go to last post
  5. 2011 WRX tuning help?

    Started by Eastcoast421, 12-04-2016 07:22 PM
    • Replies: 6
    • Views: 276
    12-04-2016, 09:54 PM Go to last post
  6. 2015 WRX How to get to 300WHP?

    Started by duc3588, 12-01-2016 12:13 PM
    • Replies: 14
    • Views: 359
    12-02-2016, 03:13 PM Go to last post
  7. 2015 WRX Mod Help/Recommendation please

    Started by yhp810, 11-07-2016 07:36 AM
    2 Pages
    1 2
    • Replies: 20
    • Views: 481
    11-07-2016, 07:32 PM Go to last post
  8. 2016 WRX - MAPerformance Turboback Review

    Started by B0Osted16rex, 09-21-2016 01:46 PM
    • Replies: 7
    • Views: 562
    11-12-2016, 06:27 PM Go to last post
  9. 2016 Wrx Exhaust

    Started by whendrie96, 11-27-2016 03:43 AM
    • Replies: 4
    • Views: 219
    11-27-2016, 12:19 PM Go to last post
  10. Accessport tuning recommendations?

    Started by Rbuntingwrx, 11-09-2016 08:43 PM
    • Replies: 5
    • Views: 258
    11-10-2016, 10:47 AM Go to last post
  11. Anyone got Uppipe Leak Sound Clips?

    Started by JoeyD02, 05-29-2003 08:22 PM
    • Replies: 12
    • Views: 830
    12-03-2016, 07:20 PM Go to last post
  12. Best sounding Exhausts for 2016 WRX

    Started by illwillchilln, 11-17-2016 05:18 PM
    • Replies: 8
    • Views: 343
    11-20-2016, 09:34 PM Go to last post
  13. Cold air intake yes or no

    Started by Thechosen1, 11-18-2016 11:02 AM
    • Replies: 3
    • Views: 212
    11-18-2016, 03:20 PM Go to last post
  14. Cold start issues - 2016 WRX

    Started by B0Osted16rex, 12-09-2016 09:00 AM
    • Replies: 2
    • Views: 129
    12-09-2016, 10:52 AM Go to last post
  15. Coolant/Radiator Question

    Started by MrFowl, 10-30-2016 08:05 PM
    • Replies: 2
    • Views: 147
    10-31-2016, 05:27 AM Go to last post
  16. CVT + Aftermarket modifications.

    Started by epxwrx, 02-11-2015 12:04 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 4,194
    11-04-2016, 11:59 AM Go to last post
  17. Datalogging Pull

    Started by opathy, 11-28-2016 08:03 AM
    • Replies: 3
    • Views: 139
    11-28-2016, 11:12 AM Go to last post
  18. Ej257 piston choice and installation?

    Started by shizzashax, 10-27-2016 05:10 PM
    • Replies: 1
    • Views: 192
    10-27-2016, 05:25 PM Go to last post
  19. Fuel pressure drop on E85

    Started by breckiam, 11-09-2016 07:57 PM
    • Replies: 0
    • Views: 123
    11-09-2016, 07:57 PM Go to last post
  20. Fuel pressure regulator location?

    Started by breckiam, 11-18-2016 12:21 PM
    • Replies: 0
    • Views: 101
    11-18-2016, 12:21 PM Go to last post
  21. Fuel Pump Pre-filters

    Started by Boobaru05WRX, 11-30-2016 04:37 PM
    • Replies: 0
    • Views: 89
    11-30-2016, 04:37 PM Go to last post
  22. GFB atomic boost control

    Started by Threeinchcatback, 10-30-2016 07:11 PM
    • Replies: 3
    • Views: 146
    10-31-2016, 05:01 PM Go to last post
  23. Help wanted to start off my 2015 WRX

    Started by thenewguy13, 11-22-2016 07:54 AM
    • Replies: 7
    • Views: 265
    11-23-2016, 07:24 AM Go to last post
  24. Intake question

    Started by Zcam24, 11-28-2016 08:25 PM
    • Replies: 5
    • Views: 220
    zax
    11-29-2016, 08:49 AM Go to last post
  25. Intake vs Intake and Tune (2017)

    Started by Davekaz33, 12-07-2016 01:42 PM
    • Replies: 12
    • Views: 252
    12-07-2016, 09:10 PM Go to last post
  26. Intercooler 17 wrx

    Started by Rexbeast39, 11-05-2016 07:53 PM
    • Replies: 8
    • Views: 252
    11-06-2016, 06:42 PM Go to last post
  27. jpipe sound differences by brand

    Started by iv., 12-07-2016 06:33 PM
    • Replies: 9
    • Views: 217
    12-08-2016, 03:45 PM Go to last post
    • Replies: 0
    • Views: 164
    10-27-2016, 12:15 PM Go to last post
  28. Muffler Delete???

    Started by Rexbeast39, 11-13-2016 03:57 PM
    • Replies: 0
    • Views: 138
    11-13-2016, 03:57 PM Go to last post
  29. New 2009 Sti Hatch

    Started by AirborneMan21, 12-02-2016 03:20 AM
    • Replies: 1
    • Views: 102
    12-02-2016, 01:48 PM Go to last post
  30. New to the forum, POTENTIAL owner

    Started by WHT DVL 3%er, 10-31-2016 07:38 AM
    • Replies: 1
    • Views: 162
    10-31-2016, 10:36 AM Go to last post
  31. Oil pan (03 rex)

    Started by MrFowl, 09-30-2016 10:02 AM
    • Replies: 11
    • Views: 275
    11-01-2016, 06:59 PM Go to last post
  32. Question Putting a WRX motor in a 2007 impreza?

    Started by Austind529, 11-21-2016 03:38 PM
    • Replies: 7
    • Views: 177
    11-21-2016, 08:20 PM Go to last post

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