HorsePower per upgrade

Originally posted by 92 civic b18c1
[b][size=3][color=blue]How much horse poer does this give me?

Lets say you have a bone stock GSR, 180hp base line.
You add a Cold Air Intake, a 4-1 DC sports header, high flow cat, and an Apex-i N1 exhaust, maybe 195hp now?[i]

Sounds about right. Just remember each mod adds HP in different parts of the power band.It doesnt add up lineraly(SP?)