I already have the cobb downpipe, so if i buy the combo id have to lose the downpipe, because i live in south america, shipping to usa to put it up for sale will be very hard. so heres the question, can there really be much difference beetwen the housing only (megan racing, buschur racing) and the combo (ams, arp) for me to ditch de cobb downpipe.

i am no going to change the turbo or engine internals, but i am going to extract every single hp i can get out of the original engine and turbo setup.

thank's

 

No, it probably won't make much of a difference, if any, on the stock turbo. Just get the housing to complete your setup.