2007 115 Etec E115DSLSUC

by Ed
(Port Saint Lucie Fl.)

Hi I have had this motor for 3 years with no issues with throttle response about two months ago she did not want to get on plan
bog down if you hit it hard. but if I slowly add throttle
It will come up with out bogging down. Once up on plain no issues or misses. Run all day with the slow to plain issue and pull spark plugs and they look great all the same and not wet or fouled!
Any ideas maybe throttle Positioning sensor?
New plugs
New fuel filter
125psi all cylinders
Thank