Header, Intake, & Exhaust - header

by adding a new racing header to the car, will this make the car have more HP? my header is a header which is made out of fire hose...

i think the air escapes out of the side of the hose

what??? no. a firehose header? huh??

now thats f'd up
a header made out of fire hose. hopefully it was on the car when u bought it. and if it was y would u buy a car from a guy that used a fire hose for a header. sounds like that car is ghetto rigged