1995 740il Bad acceleration

Hi, I recently acquired a 1995 740il 4.0L auto from a friend. The car starts, idles, runs and shifts fine. Can cruise in my neighborhood around 25mph fine but when I go to accelerate, WOT the car doesn't really move, kinda reminds me of the titantic. Big and slow. When I received the car it had a fuel pump issue so It would not stay running but I replaced that. I'm wondering if the fuel filter is clogged? Fuel injectors are clogged? Doubt it but cats could be clogged? I know about cars a decent bit but Bimmers drive me nuts. (im a VW guy )
Any help I would really appreciate it!