Yes I know, I was just asking for reviews as for noticeable power gains. I just like the convenience of closing the noise , so two tunes is a must... I think the cutout would be lovely if a snail was under my hoodpersonally dont bother with the cutout. the rule of thumb when moding cars is you have to pay to play. there are no cheap mods that make power. save your money and get a race header and a tune. you will be happier you did.