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  1. Car Threw A P0420 Code

    Started by iowagrandprix, 11-17-2014 06:37 PM
    catalyst system, catalytic converter, efficiency, p0420, spark plugs
    • Replies: 18
    • Views: 8,915
    Last Post: 12-12-2014 05:49 PM
    by HighOctaneRacing  Go to last post

    Forum:
    3.8L V6 Naturally Aspirated (L36)(L26)

  2. P4020 - Catalyst Converter Below Efficiency Threshold (Bank 1)

    Started by YMS1975, 09-23-2011 08:39 AM
    bank, catalyst, converter, efficiency, p4020, threshold
    • Replies: 5
    • Views: 4,011
    Last Post: 09-24-2011 11:03 PM
    by YMS1975  Go to last post

    Forum:
    3.8L V6 Naturally Aspirated (L36)(L26)

  3. Porting Your Gen 3 for better efficiency

    Started by OrangeL67, 07-14-2011 05:50 PM
    efficiency, gen, porting
    • Replies: 8
    • Views: 4,704
    Last Post: 07-15-2011 12:22 AM
    by matt5112  Go to last post

    Forum:
    How To Write-Ups/Tech Tips

  4. p0420 Catalyst System Efficiency Below Threshold (Bank 1)

    Started by NaturallySmashed, 08-12-2009 12:41 PM
    bank, catalyst, efficiency, p0420, system, threshold
    • Replies: 2
    • Views: 4,595
    Last Post: 08-12-2009 01:05 PM
    by NaturallySmashed  Go to last post

    Forum:
    General Tech Discussion

  5. Tranny mods for efficiency? (MPG)

    Started by JoeMama, 06-21-2008 12:51 PM
    efficiency, mods, mpg, tranny
    • Replies: 7
    • Views: 2,384
    Last Post: 06-22-2008 09:27 AM
    by Sabrewings  Go to last post

    Forum:
    1997-2007 4 speed Automatic (4T65E) (4T65E-HD)

  6. Tuning for fuel efficiency...

    Started by Sabrewings, 05-30-2008 11:55 AM
    efficiency, fuel, tuning
    • Replies: 11
    • Views: 3,079
    Last Post: 05-31-2008 11:59 PM
    by Sabrewings  Go to last post

    Forum:
    PCM Tuning

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