Well its time to spunk up the underpowerd KA. I was thinking an intake, exhaust, and an UD pulley. What kind of HP increase will I get out of these. I realize it will take alot more to keep up with other cars but I'm trying to be conservative.

 

Those mods together might net 10 HP to the wheels, which isn't much, but not bad for an NA car. They do make the car alot more fun to drive though.