FASCINATION ABOUT HONDA B16B

Can n e 1 tell me what type of gain in hp i must b getting? Also so i'v checked out getting a mugen air filter an box to but there v pricey, dose n e just one no if its worth receiving a single an what get i'd get from it. Thanx AshtonThe inside travel wheel closest to the inside of your corner travels a lot less than the surface wheel if you are t