car seems slower?

i recently got my u-bend taken out,and at the time saw that my resonator was demolished on the inside so i just had them delete both.now for some reason my car seems slower to me,is it just me or could it really be slower from deleting those? i unhooked my neg terminal to reset the computer and the more i drive it seems to have more power.so is it just my computer isnt used to it,or is it slower for some reason idk? thanks for looking.

It is possible, but more then likely it could be your imagination. Not sure?

A lot of times people overdue it with the size of their exhaust and actually lose some low end torque.

the pipe is the same size as stock.so i doubt thats the issue,the more i drive it the better it seems to be.