ya so i just borrowed my grandmas 94 civic hatchback completly stock (except for the 1 inch mufflertip my grandpa made cuz the other one broke). after an hour of nothing fun i took off the air intake plastic cover and left the filter in and drove around. It was amazing. It gave the car an increas of about 5 horse and it sounded bad*ss. I recomend for anyone with stock intake to try that. i was planning on leaving it of for my grandma but she probly wouldnt be too happy.