I dont think it will be huge gains, but it will be a little louder im sure..people have said it time and time again,some rides just dont meter wortha shit,but get in it and tell me its not loud.there was a tahoe there with 6 15s..it metered a 154.7 (or thats what he said) and not sure if that was a burp or street beat ..anyways,had 2 people listen to his then listen to mine,they swore up and down mine was louder hands down.I may have played a bad song,or it may never meter worth a shit,i do know it hurts people