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Forum: Duramax Diesel Performance Shop

What's it take to make big power? Tips on Duramax diesel performance products, improving fuel economy, power upgrades, exhaust systems, and programming. From a little to a lot, find out what it takes. Post a question or offer your advice.

  1. Arrow Sticky Thread Sticky: Magnuson-Moss Warranty Act

    Started by More Power, 08-13-2007 15:07
    • Replies: 7
    • Views: 14,211
    10-25-2007, 10:51 Go to last post
  1. Duramax vs GM

    Started by Usha, 12-13-2018 02:30
    • Replies: 3
    • Views: 110,499
    12-13-2018, 10:54 Go to last post
  2. Help with $$$$ Build

    Started by Trooper007, 05-24-2020 03:05
    • Replies: 4
    • Views: 78,244
    06-30-2020, 08:55 Go to last post
  3. Kennedy Custom Tunes MPG Gains for LLY's?

    Started by mjammer, 03-18-2008 10:36
    3 Pages
    1 2 3
    • Replies: 52
    • Views: 37,740
    06-07-2011, 07:34 Go to last post
  4. `06 LBZ improvement, MPG and power

    Started by pete m, 01-17-2010 10:11
    3 Pages
    1 2 3
    • Replies: 43
    • Views: 34,608
    03-24-2010, 06:50 Go to last post
  5. deciding between 4 or 5 inch exhaust

    Started by lmholmes11, 09-27-2012 06:20
    • Replies: 8
    • Views: 31,738
    02-21-2018, 11:36 Go to last post
  6. Three LBZ tow tune comparison

    Started by Mark Rinker, 02-23-2009 11:15
    3 Pages
    1 2 3
    • Replies: 40
    • Views: 29,334
    04-08-2009, 13:47 Go to last post
    • Replies: 6
    • Views: 28,099
    08-27-2007, 07:52 Go to last post
  7. Trans Problems when Towing

    Started by Aepozzi, 08-05-2012 22:03
    2 Pages
    1 2
    • Replies: 24
    • Views: 23,622
    02-14-2013, 09:18 Go to last post
  8. Heads up for California Diesel owners

    Started by Philsauto, 04-19-2009 21:30
    2 Pages
    1 2
    • Replies: 21
    • Views: 20,302
    02-22-2012, 18:47 Go to last post
  9. Banks or AFE Cold Air Intake?

    Started by Londell, 02-12-2007 15:29
    • Replies: 9
    • Views: 18,864
    03-31-2007, 18:21 Go to last post
  10. Unhappy 2003 LB7 KD Mega Filter

    Started by PoppaWilley, 07-11-2012 20:25
    • Replies: 11
    • Views: 17,989
    03-30-2015, 07:09 Go to last post
  11. EGT temps on 05 LLY

    Started by REDTRUCK05, 07-06-2006 21:44
    • Replies: 12
    • Views: 16,814
    08-26-2006, 20:35 Go to last post
  12. after market exhaust

    Started by weldinfool, 04-18-2006 13:33
    2 Pages
    1 2
    • Replies: 30
    • Views: 16,534
    07-26-2007, 15:54 Go to last post
  13. Question Banks Ram Air Kit - The Good and the Bad

    Started by DIESELMAX403, 06-26-2006 11:36
    • Replies: 10
    • Views: 16,363
    09-11-2006, 10:43 Go to last post
  14. Question Dual CP-3

    Started by More Power, 01-20-2007 15:24
    2 Pages
    1 2
    • Replies: 36
    • Views: 15,555
    06-04-2007, 08:17 Go to last post
  15. industrial injection turbos lb7

    Started by linchhummmer, 01-11-2008 15:56
    2 Pages
    1 2
    • Replies: 26
    • Views: 14,637
    02-25-2011, 11:34 Go to last post
  16. GM Watching Your ECM

    Started by rmchowchow, 05-20-2008 19:38
    • Replies: 15
    • Views: 14,157
    06-25-2011, 03:55 Go to last post
  17. LLY Owners with Boost Stick--MPG'S

    Started by 6.6Turbo, 11-20-2007 14:21
    • Replies: 8
    • Views: 13,510
    01-16-2008, 19:39 Go to last post
  18. Duramax reaches 1000HP on fuel only

    Started by Bobo, 01-27-2007 23:27
    • Replies: 10
    • Views: 13,368
    02-05-2007, 12:21 Go to last post
  19. Diesel Fuel Additives

    Started by billferg, 01-13-2010 10:21
    • Replies: 18
    • Views: 13,335
    11-16-2018, 02:58 Go to last post

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