my sohc Vtec 97 accord special edition starts to bogout evrytime i reach 4500 to 5000 rpm but my friend's mom has a 96 sohc accord DX and it reaches 6000 rpm like nothing. what can be the problem with my car?

 

If it just seems to run out of omph gradually, it could either be a hideously dirty air filter, or a collapsed catalitic converter
If it breaks down, starts misfiring etc, it's more than likely fuel related (low pressure)

Oh, by the way, If your SE is anything like mine; its equiped with a 2.2L F22b2 SOHC non-vtec.

 

evry time i trough the rpm's up wether im driving or in nutral or park it will rise fast but when it starts to reach 4400 rpm it starts to slows down and stop at around 4900 to 5100. ....also the head dose say VTEC on the top.

 

You may have an EX, which I believe came with an F22a1 (2.2L SOHC Vtec). The SE's were really LX Accords with special option packages (IE: sunroof, Keyless entry, and a reduced choice of colors, etc).
If you don't know the vehicles' past (bought it used) you may be the proud owner of an SE with a up-swapped engine. If this is the case, it will be more difficult (other than the obvious stuff I suggested before) to determine whats going on; because at that rpm range, several things can happen.
1) The rev limiter is starting to think "Do I? or Don't I?
2) The Vtec system starts applying at 4800 rpm.

For what you've stated, I would seriously look at your catalytic converter. When the element collapses, it acts like a partially blocked exhaust; allowing the engine to pass only so much exhaust before things start backing up (and limiting rpm's)
A quick way to test without tearing things apart involves mounting no more than a vacume gauge to the intake manifold somewhere between the Throttle body and the head.
Watch the gauge while slowly rising the rpms while in neutral, a healthy engine will maintain no LESS than 16" of vacume. A collapsed (or clogged) converter will show decreasing vacume as you reach the point where exhaust gases start backing up.

P.

 

97_accord_se_vtec.jpg

I did some reseach and found out that my car has an engine swap from a accord ex

 

I'm replying to keep your thread active so that others can step in here and help, and also to add some stuff.
I do believe that your condition is not indicative of anything seriously mechanical; you have not spoken of any associated noises, thus I'm still thinking along things which support engine operation. IE: Restricted exhaust, insufficient fuel pressure, yadda yadda yadda. I do have one question which you can answer.
Did this condition develope over time, or did it exist when you bought the car?

 

i know that the car was crashed at one point and that the engine was
damaged. but i thought they had put an original 97 accord se motor in it
until i did some reserch on that type of car and noticed that those cars
dont come with that engine. my frend told me that the problem could be that
i have a ex sohc vtec motor but my computer could be from the original 97
accord se non vtec. i think he could be right. the car drives and sounds
perfect even when you reach the rpm problem so i think it just might be the
computer.

 

Thats something I was beginning to suspect myself, but I'm glad you raised the question yourself.
This is one area that I'm gonna have to leave to others more versed.
I will say that you must identify what ECM you've got, as opposed to what you're supposed to have for an ECM.