I have a 2005 f150 XLT. 5.4L 61kmiles
When ever I start up my truck and I accelerate pretty fast I get this bogging, it will catch and run fine. Just when I accelerate A LOT! it happens. I do have the 100k warranty so I can take it in and check it out. But I had it done before with my ranger and they wont fix anything untill its really MESSED up.

-Thankkks! Mark

 

Any codes thrown? sounds like it could be a throttle position sensor sticking or idle air bypass valve problems. Also check your MAF to make sure its clean