has anyone used this and like this product? im thinkin of getting a SCP 3.5 inch fresh air and use it on a stock car but i will mod it in the future. i have heard it make the supercharger louder is this true also? i would like it to be louder ah. this plus exhaust (SCP setup) and a 5% overdrive were gonna be my first batch of mods, hoping for low 15s-high 14s. is the 5% worth it and can you tell a HP difference??? thanks.