You can't get more sound out of a drop-in because the stock intake is built to baffle everything.Ouch!
I paid like half that price.. and I'm glad I didn't pay more, 'cuz it's totally useless.
I was expecting a little bit more sound, but it didn't change a thing.
Get a bottle of Castro SuperClean it's the same formulation. It's a hell of a lot cheaper and works. I usually do 2 cycles and you'll see a lot of crap coming out. I clean mine every 3 months or when I change my oil. Bing bam boom done in like 10 minute dry too.