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Discussion Starter #1
Hello and thanks for your time, I'm new to the site as well to the diesel world.
I recently purchased a SCT GTX & a 2015 powerstroke 6.7 super duty. Since I hooked it up the truck throws a "exhaust fluid system fault" which has the truck stuck in limp mode.
The truck did have a previous owner who put on a 4 inch turbo back straight exhaust & I'm to new to know if they did anything else.
Then the only thing I did was add a K&N filter to the air box.
The truck ran great no issues until I installed the SCT GTX. Any help would be appreciated.
Thank you for your time
 

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did you save the old tune when you hooked up the SCT GTX? If not, you are screwed and will have lots of headaches if you can't find the previous owner and get the tuner they used and then, you might be in for a lot of hassle to get it out of the limited power mode.
 

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Drunk Post Extraordinair
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As mentioned above, you need the tune that was installed on the truck before you loaded the GTX. Please tell me that the tuner captured it as the ‘stock’ tune. If it did just reload the tune it captured as the stock one and you should be good to go. Otherwise you’re going to be in a bind.
 
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