Originally Posted by E90ROXS
Try this, afe intake (magnum force) + second cat delete + exhaust of your choice. It's not loud at lower RPM but sounds incredible at higher RPM (from 4k and up).
^This with a Magnaflow catback. Magnaflow is the loudest and has a deep rumble at low rpm when you're just cruising or accelerating from a dig. Once u get into the higher rpms then u hear the AFE intake screaming plus a little bit of raspyness from the secondary cat delete. It's a really awesome sounding combo.
This will be loud enough so you don't have to call your friends when you go pick them up. They will hear you coming (and unfortunately so will the police). But if u want it really really loud, then go muffler delete or PE which is even louder