Something wrong?....

[DaNnY LaD]

hey people...

Ive got a problem ive got a 1.4i 16v sport and its not running right i th ink..My g/f sister has bought a corsa 1.4 sport and it pulls quicker than mine all its got is a pipercross induction kit and 15\'\' alloys and an exhaust .however mine got a standard back box with 17\'\' and a drilled airbox but its not moving like a sport shud do....When i had my little steelys on it wasnt fast then and it wasnt pulling as hard my g/f sister corsa..What can be wrong...Ive been told its my airflow meter i think..
Both engines are ecotec and both 1.4i 16v sport what could be wrong...

thanks danny