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  1. 6.5/6.2 High Performance Engine Modifications
    I'm considering buying one of the Quadstar OBD2 tunes, but was wondering how much of a difference it could make (stock turbo, 4" exhaust, and I want one of the workhorse tunes). I was also wondering if I order a complete PCM, if I will be able to simply swap the PCM's and go, or if there are any...
  2. 3.0L Duramax
    Is it just me or is the exhaust brake almost totally useless? Yes I am referring to using it in the tow/haul mode.
  3. 6.5/6.2 High Performance Engine Modifications
    I like my truck (1993 6.5l 5spd) but it really isn't that powerful. I tow regularly, the truck tows nice, but when going up a hill it doesn't make a whole lot of power. 70mph is about 2000rpm, which I thought would be right in the sweet spot for power but I find I am often on the floor...
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