[C's 94 InTeGrA]

Well some small power gains ya can do are...

*Cold air intake (that will give ya like 5 or more horse)
*Header with downpipe and exhaust system 9there is about 15-20 horsepower)
*Throttle Body
*intake manifold

Then if u want big horsepower gains then u can do
*Cams
*Rods
*bigger pistons