My review of the SCT X4 - Ford Powerstroke Diesel Forum
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Old 06-25-2014, 04:12 PM
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My review of the SCT X4

Well this is somewhat putting the cart before the horse, but I received my X4 yesterday and sent my information in to the tuning company at 1715, later that evening I received my instructions and tunes via email. I just loaded the performance dpf on tune in the truck tonight, everything went smooth and the instructions from the custom tune writer were very detailed and dummy proof. So I will say that so far their customer service is on point.

As far as tunes go, I will be running DPF on for a few weeks until I get my flopro exhaust system and delete it. I plan to run the 4" exhaust with a 6" tip. Once I get the exhaust installed I will most likely run egr block off plates for a while just to ensure that everything works then I will do a full egr delete.

As far as truck use goes, it's a daily driver, 25 mile commute each way to work, 90% of which is hilly highway at 70-75 mph. My current hand calculated MPG is averaging 13.2-13.7. I have kept track of it for every tank of fuel purchased. The truck also has a 4" lift with 35x12.50x20's so I'm not looking for 20+mpg. I'm hoping to even see 17 but I just wanted to give a little bit of info so yall can compare the mpg reports. I will post back soon with reviews of the tunes, tuner, and custom tunes.

The only thing that I am uncertain about is whether or not I will go with a muffler on the exhaust. I've read near about all the posts on here discussing the topic and pros or cons, I just haven't decided yet. I'm leaning towards no muffler initially and if it's too loud then I'm sure I'll add one on, but we shall see.

Thanks,
Rob

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Old 06-25-2014, 06:51 PM
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Well wrote, hope it goes smooth.
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Old 06-26-2014, 01:10 AM
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Will be waiting to hear how your DPF delete tunes work out. I am on the fence right now about which tuner to get....MiniMaxx vs SCT x4. The easy switching of tunes with H&S sure is nice, but not sure it's worth the $1100 extra dollars. Glad the x4 is working for you so far.
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Old 06-29-2014, 04:38 PM
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Well, here we go. 22 mpg with 35s, burning the back tires bald, beating corvettes in a race, and everything else people want to hear. But that's just a list of things I did not see with this tuner. What I did see is a slight increase in fuel mileage, I will know just how much when I fill up tomorrow. My last tank hand calculated at 14.03 mpg the day after I put the tuner on it. The truck does feel a little quicker. My max boost before tuning was 23.2 psi, I am now seeing up to 25.4 at WOT. On a more negative note, the truck does regen more, with the gauge I can see the dpf fill up faster. And before tuning my DEF said the level was OK, so it was atleast above half, and I have about 3000 miles on this tank of DEF, but 8 just got the message today that I have 500 miles to empty. Seems a bit fast to me. So all in all I think the extra bit of fuel mileage will be consumed by extra regens. My next tank of fuel should be a better indication of when the tuner can do for fuel mileage, I did jump on the skinny pedal pretty often at first but we will see. I can see a delete pipe and egr delete in my future.

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Old 06-30-2014, 02:53 AM
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Who's DPF on tunes are you running RP3?
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  #6  
Old 06-30-2014, 03:36 AM
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SCT tunes

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Old 06-30-2014, 04:33 AM
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Delete that pig!
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Old 06-30-2014, 01:25 PM
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Subscribed.

Just ordered my X4 this weekend as well as a few other things. Glad to here its working well for you.
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  #9  
Old 06-30-2014, 01:38 PM
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Believe me cheap, the delete will be happening soon enough. I can't wait. I just hope I don't have the same problem as another member did recently with his Livewire.

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Old 06-30-2014, 02:12 PM
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nice to see an affortable tuner for the newer trucks that ditch egr/dpf
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