Forum Discussion

rlyons's avatar
rlyons
Explorer
Aug 05, 2014

Bullydog GT Diesel Tuner

I purchased a GT Bullydog Diesel tuner for my 2008 - 2500 Ram with 6.7 Cummins primarily to get better mileage around town and better mileage and performance while towing my travel trailer. I also added an AFe cold air intake. I believe I am getting better mileage with these improvements but have not taken the Ram to the mountains to see how it performers there with the add ons. My question is, should I have the truck in "Tow" mode when trailer towing when using the Bullydog tuner in the "Tow" power setting or just leave it up to the BD tuner to do everything. Is the BD tuner just controlling power and does it play nice with the Rams tow mode or do they work against each other?
Tow Vehicles
  • Cummins12V98's avatar
    Cummins12V98
    Explorer III
    Aug 07, 2014
    You are playing with fire. I would leave your truck stock and run TH and EB ALL the time. Your turbo and transmission will be happy. You should have plenty of power towing the RV that you have.
  • rlyons's avatar
    rlyons
    Explorer
    Aug 07, 2014
    I'm surprised at the wide range of opinions on this device. One of the advantages of using the Bullydog Triple Dog Diesel Tuner was that it acts as a multi-gauge to read out things like egt and boost pyro 1and 2 whether your running stock or a tune. Also you can preset it to drop to "no power" mode if certain pre-set parameters are met.
  • mudfuel07's avatar
    mudfuel07
    Explorer
    Aug 05, 2014
    Bullydog is the worst tuner in the world for your transmission. I would use your tow/haul mode if you are dead set on using that tuner. You may not want to hear it, but if you really want a tune, sell that POS and get a Smarty with custom tunes that are written specifically for your truck. And as said above, get gauges!
  • wcjeep's avatar
    wcjeep
    Explorer
    Aug 05, 2014
    Not familiar with your Bullydog. Avoid settings that increase power with injector pressure. Look for timing and duration. Tow mode may also lower Egt's. Programmers all work different. Since your adding power you have added gauges, right?
  • travisej's avatar
    travisej
    Explorer
    Aug 05, 2014
    I believe you should have both in tow mode. The tuner will give you a little more power but i dont think it will program your shift points on your tranny. I have the GT for my 03 cummins but its a manual trans.

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