17 Ecoboost

Discussion in '5 Star Tuning' started by coolzzy, Apr 29, 2018.

  1. NASCAR Mike

    NASCAR Mike Full Access Members

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    There is a night & day difference on turbo engines if you are willing to run 91 or 93 octane.

    You have two choices. A tuner that reflashes your computer module or a piggyback tuner like JMS BoostMax. It intercepts the factory signal and changes it to provide more boost.

    Both have pro's and cons. The Boostmax only does turbo boost and pedal effort with another chip. A tuner you can boost, pedal effort, transmission shifts, OD lockup for better MPG, turn cooling fans on sooner and much more.

    The downside to a tuner is that if you blow headgaskets because of overboost, the dealer will see that the computer has been reflashed and could void your warranty.

    The JMS Boostmax leaves no digital footprint of any kind. You just have to remove the module before you bring it to the dealer.

    I use the Boostmax. The power increase is incredible and I average about 19MPG if I am not driving her hard.
     
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  2. coolzzy

    coolzzy Full Access Members

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    I'm not running an aggressive tune, in fact the ecoboost performance/tow tune from 5 star may actually have less power but is custom designed for towing. According to the rep I talked to it doesn't let the turbos get as hot or boost as much at low throttle compared to stock. This is an effort to reduce LSPI (low speed pre-ignition) which can blow up a turbo di motor (look at early veloster turbos as an example, and some focus STs). I removed my tune a few months ago because towing/camping season had ended and I notice the stock tune really let's the truck lug and use boost instead of downshifting. When tuned the truck down shifts easier with pedal input, and really limits boost unless you get into the pedal. You hear the motor a bit more because it's limiting boost and letting the motor alone do more of the low speed mundane tasks of moving the truck.
     
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  3. Geargambler

    Geargambler Full Access Members

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    I appreciate the input from you two! Good info!
     
  4. Mike Wolfe

    Mike Wolfe Full Access Members

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    FYI
    You can use E85 with no issues
    It is about 108 octane
    Injectors & fuel system has enough flow capabilities to accommodate it
    I use the 5 star E30 calibration in my vehicles with E51 mix
    Tremendous increase in power
    Fuel mileage about 85% of that I experienced using 91 octane E10
    91 & 93 octane tunes not even close to hp & torque with E30 calibration:burnout::burnout:
     
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  5. Geargambler

    Geargambler Full Access Members

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    I had a feeling that higher content ethanol wouldn't be an issue with a calibration in place. The 5.4 flex fuel expeditions have the ethanol sensor on them. I'm sure the ecoboost expeditions do too! Those sensors will show the exact ethanol content via voltage (you can even get a gauge to output it) as well as the temperature of the fuel via frequency.
     
  6. Savannah Dan

    Savannah Dan Member

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    When towing I run the five star 89 octane performance tow tune. I pull a 26' Pro Line boat, about a 7K# load with trailer. It pulls really strong. I had my brother with me when we were on the way to put it in the water. It was the first time he had ridden in the Ex. I asked him what he thought about it. He said he was impressed with the smoothness, sound levels, and the acceleration. I told him to look out the back window. He said, "Holy crap! I forgot we were pulling that big ass boat!"
     
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  7. Geargambler

    Geargambler Full Access Members

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    That is classic! My first time towing with this 2017 limited was with a 24 foot enclosed trailer with a 2016 mustang in it. I was delivering it to the philly auto show because the weather was crappy. It was a slow ride down, getting used to the sway control. I think I could have moved the car forward and added some tongue weight. On the way back, I literally forgot the trailer was there. I had premium fuel in it, using the tow / haul mode. Really can't wait to get a tune. I'll be calling the five star guys for sure!
     

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