cuzins

Hey guys i just took my car to get a body integ and i was doing 100km and it reved around 3200rpm i dunno what would be the problem, i took off my polution pump and plugs the hold on the back of the intak but not the vacum line, i also got a shorter belt but i drove it there without a air filter and i dunno if it should have a mass airflow sensor i bought a computer for a 88 and the guy said it doesnt have the airflow on it but i think i have a plug in for it anyways i think it just revs to high