SCT TS custom tuning

txoutlaw250

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I have heard that updating the TS will remove the egr off function and not allow custom tune uploading anymore. Is this true? I have a TS I have not updated in about a year. Also been running the canned tunes but am ready and wanting custom tunes. What’s the true story?
 

powerlifter405

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:whs:

I updated my X4 and its finicky as frick. Never had issues w/ tune uploads, i get voltage errors and communication errors all the time now.
If you don't have to update, don't.
 
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I updated an older livewire and specifically asked sct if it would affect the no emissions function and was told that it should still function the same as it did from the factory. Guess what? It no longer had the canned tunes that would d e l e t e any emissions after the update. But I was still able to use it when I bought custom tunes for a d e l e t e d 6.7 powerstroke. I still wouldn't update it but if some reason you need to it'll take custom tuning to do any sort of d e l e t e.
 

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