I dont think it will be that bad. All the turbo cars i have had; have had atmospheric BOV's and an intake so its the same case here.
What i was meaning by LOUUD NOISES was I dont give a shit about performance. Currently I just want noise and this will give me the noise and not cost alot. Also performance wise these are just like upgrading your BOV in a round about way so there is some "performance" gain to it, especially if these cars have the cracking/breaking issues other integrated BOV cars do. Truth be told i doubt i will sink much into my fiesta, its not worth it to me performance wise. Matter of fact Imma fix my sig to reflect my views lol