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    1. Site News

      News and updates about our site.
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    2. Vendor Announcements

      Special sales, group buys, and product announcements from our supporting vendors. We encourage all members to read and submit vendor reviews as well.
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    3. Site Problems/Feedback

      Need help using the site? Have a suggestion for us? Post your questions, concerns, comments, compliments, and feedback here.
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      Latest: Protect Yourself in the Classifieds Ludachris, Jan 14, 2018 at 2:20 PM
    4. Welcome Forum/Member Intro's

      Stop in and introduce yourself
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      Latest: Noob to Mitsubishi hharper1321, Jan 18, 2018 at 11:33 AM
    1. Tech Article Archives

      DIY Tutorials, VFAQ's and Parts Reviews posted by our members.
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      1,553
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      Latest: Electrical short GSX93DSM, Jan 18, 2018 at 6:36 PM
    2. DSM Build Journals

      Start a Journal to document your DSM build and document race events, dyno days, etc for the car. To create a Build Journal you will need to Create a DSM Profile. A Build Thread will be created in this forum automatically.
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      3,067
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      Latest: 98 GSX Time Trial build Black95TSIawd, Jan 18, 2018 at 9:21 PM
    1. Frequently Answered DSM Questions

      A collection of very common and repetitive DSM questions with links to the answers. Required reading for all newbies! All threads in this forum are locked, replies are disabled.
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      322
      135
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      322
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    2. Maintenance & Repairs

      Oil choices, timing belt, setting timing, CV boot replacement, alternator servicing, fuse/relay checks, and other basic maintenance, repair and diagnosis Q&A.
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      117,882
      10,676
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      117,882
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      Latest: Evo Oil Filter Interchangeability greekgodchaos, Jan 19, 2018 at 5:20 AM
    3. Bolt-on Tech

      4G63 intake, exhaust, intake manifold, ignition, fuel system, cooling, etc.
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      331,442
      26,628
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      331,442
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      Latest: Using an Evo 8 IAC and TPS on a 2g cficare68, Jan 19, 2018 at 2:11 AM
    4. Turbo System Tech

      4G63 turbos, Intercooling, Boost Control, Wastegates, etc.
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      6,828
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    5. Tuning & Engine Management

      4G63 EPROMS, ECU, MAF, knock, EGT, wideband, datalogging, fuel trims, etc.
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      122,562
      13,306
      Discussions
      122,562
      Posts
      Latest: Cleaning Wideband Sensor for Recalibration? infam0usdeed, Jan 17, 2018 at 11:38 PM
    6. Engine Swap Tech

      For all discussions surrounding engine swaps - DSM engines into other cars or other car engines into a DSM.
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      173
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      2,064
      173
      Discussions
      2,064
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      Latest: 6g75 into a DSM mysticj, Jan 18, 2018 at 11:07 AM
    7. Cylinder Head & Short Block

      4G63 cams, valvetrain, pistons, rods, stroker kits, 6-bolt swaps, hybrids, etc. Read this Forum's Strict Guidelines.
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      80,586
      6,818
      Discussions
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      Latest: Using a Front Case with Crankwalk wear Atlantian, Jan 17, 2018 at 10:57 AM
    8. Custom Fabrication

      TIG/MIG welding, jig-building, metal working, fiberglass, carbon fiber, and other custom fabrication projects.
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      997
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      26,136
      997
      Discussions
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      Latest: Archer Fab Tig Welding Thread Archer Fabrications, Jan 17, 2018 at 12:03 AM
    9. Handling Tech

      4G63 suspension, steering, brakes, tires, lightweight wheels, bushings, etc.
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      71,259
      8,030
      Discussions
      71,259
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      Latest: Show me your drag radials and slicks! OH91awd, Jan 18, 2018 at 1:10 PM
    10. Drivetrain Tech

      4G63 transmission, clutch, flywheel, driveshaft, gears, differentials, transfer case, shifter, etc.
      Discussions:
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      Posts:
      93,212
      11,914
      Discussions
      93,212
      Posts
      Latest: 91 fwd tsi intermediate shaft and axle mod vs lsd Mello, Jan 18, 2018 at 8:31 PM
    11. Electrical Tech

      Wiring, turbo timers, electronic boost controllers, gauges, fuses, wiring harnesses, wire tucks, car audio, and all other electrical component discussions.
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      12,743
      1,875
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      12,743
      Posts
    12. Appearance/Interior/Exterior

      All interior and exterior tech discussions; body and paint, conversions, lighting, washing, waxing, etc.
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      Posts:
      298,251
      20,080
      Discussions
      298,251
      Posts
      Latest: 2G Door Aluminum Handles ec17pse, Jan 18, 2018 at 11:33 PM
    13. Newbie Forum

      Common, repetitive, beginner DSM questions that have been asked and answered thousands of times. We use this forum as a dumping ground for noob questions.
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      170,301
      Discussions
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      Latest: I can't get the block off of the trans? amsrn13, Jan 19, 2018 at 5:23 AM
    1. DSM 420A Frequently Answered Questions

      All the common and repetitive 420A DSM questions asked with links to the answers. Read-only.
      Discussions:
      7
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      31
      7
      Discussions
      31
      Posts
      Latest: Cylinder head parts list BogusSVO, Nov 28, 2012
    2. 420A Bolt-on Tech

      Intake, exhaust, ignition, fuel system, cooling, etc - specific to 2G N/T DSMs. New Members must limit their 420A tech posts to this forum.
      Discussions:
      9,006
      Posts:
      105,124
      9,006
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      105,124
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    3. 420A Turbo Conversion

      Turbo kits, swaps, etc - specific to 2G N/T DSMs.
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      2,055
      Posts:
      24,902
      2,055
      Discussions
      24,902
      Posts
    4. 420A Engine Management

      EPROMS, ECU, MAF, knock, EGT, wideband, datalogging, etc - specific to 2G N/T DSMs.
      Discussions:
      312
      Posts:
      3,020
      312
      Discussions
      3,020
      Posts
    5. 420A Drivetrain Tech

      Transmission, clutch, flywheel, driveshaft, gears, differentials, transfer case, shifter, etc - specific to 2G N/T DSMs.
      Discussions:
      338
      Posts:
      2,916
      338
      Discussions
      2,916
      Posts
    1. Drag Strip

      Preparation, technique, tips, and "kill" stories from the Drag Strip. No street racing discussions.
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      63,545
      3,025
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      63,545
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      Latest: 10.7@128 First Time Out! Boomdeeze, Jan 15, 2018 at 10:06 PM
    2. Road Course & Autocross

      Autocross, Road Race, and Open Track Event discussions. Preparation, technique, tips, and stories from the events. Tell us about your last event.
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      20,946
      1,010
      Discussions
      20,946
      Posts
      Latest: Road racing Sims... slowwhite, Jan 16, 2018 at 8:55 PM
    3. Dyno Talk

      For all the DSM dyno queens. Discuss dyno results here. For tuning discussions, use the Tuning Forum.
      Discussions:
      296
      Posts:
      8,889
      296
      Discussions
      8,889
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    1. The Hangout

      All non-tech and non-DSM related discussions. Read the Forum Guidelines. Play nice or get booted!
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      37,307
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      855,609
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      Latest: RIP ETOWN Auto RS T, Jan 18, 2018 at 10:43 PM
    1. Pacific Northwest Region DSM

      Washington, Oregon, Idaho, Alaska
      Discussions:
      2,386
      Posts:
      24,151
      2,386
      Discussions
      24,151
      Posts
    2. NorCal Region DSM

      Northern California and coastal areas
      Discussions:
      3,155
      Posts:
      37,526
      3,155
      Discussions
      37,526
      Posts
      Latest: gst transmission deviousgst, Jan 9, 2018
    3. SoCal Region DSM

      Southern California and coastal areas
      Discussions:
      2,360
      Posts:
      28,277
      2,360
      Discussions
      28,277
      Posts
    4. Southwest Region DSM

      Arizona, New Mexico and Las Vegas
      Discussions:
      1,184
      Posts:
      8,764
      1,184
      Discussions
      8,764
      Posts
    5. Rocky Mountain Region DSM

      Colorado, Utah, Wyoming, Montana
      Discussions:
      1,041
      Posts:
      8,238
      1,041
      Discussions
      8,238
      Posts
    6. Gulf Coast Region DSM

      Texas, Louisiana, Mississippi, Alabama
      Discussions:
      854
      Posts:
      9,807
      854
      Discussions
      9,807
      Posts
    7. Midwest Region DSM

      North Dakota, South Dakota, Nebraska, Iowa, Kansas, Oklahoma, Missouri, Arkansas, Kentucky, Tennessee
      Discussions:
      1,793
      Posts:
      32,050
      1,793
      Discussions
      32,050
      Posts
    8. Great Lakes Region DSM

      Minnesota, Wisconsin, Illinois, Indiana, Michigan, Ohio.
      Discussions:
      1,475
      Posts:
      8,436
      1,475
      Discussions
      8,436
      Posts
    9. Tri State Region DSM

      New Jersey, New York, Pennsylvania
      Discussions:
      2,532
      Posts:
      23,649
      2,532
      Discussions
      23,649
      Posts
      Latest: 2G GSX Full Exhaust JeffwithaG, Dec 8, 2017
    10. Mid Atlantic Region DSM

      Delaware, Maryland, Virginia, Washington DC, West Virginia
      Discussions:
      1,170
      Posts:
      12,839
      1,170
      Discussions
      12,839
      Posts
    11. New England Region DSM

      Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont
      Discussions:
      760
      Posts:
      5,986
      760
      Discussions
      5,986
      Posts
    12. Southeast Region DSM

      Florida, Georgia, North Carolina, South Carolina, Puerto Rico
      Discussions:
      1,609
      Posts:
      14,566
      1,609
      Discussions
      14,566
      Posts
      Latest: Looking for a ecplise close to Atlanta area Boomdeeze, Jan 16, 2018 at 7:47 PM
    13. Canada DSM Forum

      Yukon, NW, BC, Alberta, Saskatchewan, Manitoba, Toronto, Montreal
      Discussions:
      387
      Posts:
      4,712
      387
      Discussions
      4,712
      Posts
      Latest: New awd dyno and shop BlkSmk, Dec 8, 2017
    14. All Other Areas

      Outside the US
      Discussions:
      49
      Posts:
      674
      49
      Discussions
      674
      Posts
      Latest: U.K. Dsm owners got_psi, May 30, 2017


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