I have a 2013 fx4 ecoboost I bought a hypertech programmer max energy 2.0 when I put just the regular tune in it when I'm under moderate to full throttle it acts like it's missing take the tune out back to stock mode it runs fine any suggestions thanks

 

Don't use a canned tune. Only custom.

 

So are you saying don't use the hypertech at all

 

Gap plugs to .028".

 

I think Mike is on the right track. The Tune is upping your boost levels and you may be getting plug blowout with the tune.

How many miles are on your truck?