transmission upshift problem

First I would like to thank the people who helped me resolve my problems every previous time. You are awesome.

Now This is about my 98 maxima, when I floor the gas pedal on a flat road, the downshift is pretty quick and no problem however upshifting happens too fast so I lack passing power sometimes.

On my previous 95 maxima this was not an issue.

Any ideas any one please.

I have not received any respond yet.
Do you have any suggestions guys?

i say push the petal TO THE FLOOR and then drive right off a f-ing cliff.... j/k i have no idea

I'm assuming you have an auto? At what RPM does it shift?

~THT

That is usually higher RPMs which shifts up fast, I would think 4000-5000.