Hi and thanks for using 2CarPros.com.
Often times, a plugged catalytic converter or partially plugged, will cause a power loss. Based on your description, that is my first suspect. However, you should consider testing fuel pressure to ensure there is not a restriction or an issue with the regulator.
Take a look through this. First is a description of the symptoms related to a catalytic converter problem and the second describes how to test.
Let me know if that helps or if you have other questions.
Saturday, December 15th, 2018 AT 9:53 PM