Please i used a different name in my jamb and waec. I used Victor Ebuka in my waec result while in jamb and post utme i used Victor Iloka i will to know if it will affect me in gaining admission. And if yes wat will i do?

yes it will
its called impersonation because thats what you are trying to do

Since you've use

It will affect u...go to court and swear in that you are the person bearing both names....so it is the stuff that they will gv u in court that u will be showing to anybody that ask for it....

And go get a birth certificate showing both names...like ebuka victor iloka

Since you've used the same name for post ume and jamb, your best bet is to try your luck wid waec to change your name to the later. You prolly maybe lucky.
All the bst bro!