i did my exhaust and removed all the cats and resinators. i ran a 2.5' single exhaust to a cherry bomb
i also took out my air pump. Now my car doesn pull as much on low end.
please reply

 

it doesn't pull as much on low end because you opened the exhaust it's designed by the factory it have the best flow for low rpm and high rpm(well as good a mix as they could get). now that you opened it up you will have a loss at low end and a much better gain at high.

oh and let us know how long that cherry bomb lasts