i have a 2007 f150, when it is warm you ad throtle or under load, it cough spits and sputors. if you ad throtle slowly, it is not as noticeable and you will feel a miss, the left side cat has been changed, it has 86,000 miles,
it has a saleen blower on it, been on since new, i first notice this about 15,000 miles ago, it comes and goes.

 

Welcome to the forum.

You should post your question in the 04-08 section, you will probably find that a lot more people can help you over there to.

 

Could be a misfire but it would do it more and more if that was it. Moved to 04 to 08 section for you.

 

do you have a programer
pull the codes

you should see what cyl are causing the miss
if it's a miss

 

same thing happened to mine... it was a miss, however it never threw a code. spark plugs and COPs took care of it... but for some reason mine will still do it when cruising with slight gas going uphill... im still troubleshooting that.