Hmm well this goes to anyone who has done an intake setup like this. I never really cared to do an intake setup because the truth is on a N/A engine, you will only gain a few more HP, and that may be because the previous filter was not as clean as your new cone. (like changing a stock filter, you will get a few more HP from a new stock one) Anyway if there really is a positive sound difference, I may consider getting one. As of now, the only intake noise I hear is a sucking sound when my high idle is on. Other than that it's all just engine noise resonating through the block/exhaust system. What type of noise do you start to hear, exactly? I know it was described as a "rumble" but I'm not sure what that means. Anyway I wouldn't mind spending a bit for a better sound, is it really worth it?