hi everyone i have 2010 maxima the car hesitates under hard acceleration at 3500 and at 5000 rpm it`s like misfiring i changes spark plugs , cleaned fuel injectors changed MAF the cars feels better but i still have a slight hesitation actually noticeable at 5000 rpm under full throttle what could be the problem?

How long have you owned the car?
How long has this been happening?
How many miles on the car?
What octane gas are you are using and name?
What performance mods are on the car?

have you check for codes before dumping money into parts you might have not needed?

I owned it for one year it has been happening recently the cars has 83 k miles using Regular gas and the cars is completely stock

Checked it .. No codes and no ses light

First thing I would do is put in a full tank of 91 octane top tier gas. That just might solve the problem.