Ok then, well basically i was wondering if 2.4L litres worth of exhaust through a 2.5'' collector was going to be enough to get proper acceleration of the turbine. I don't want to have too many problems. These turbochargers are small but they claim to support up to 300 hp easily. And i figured with two of them 600 hp at the flywheel wasn't a longshot. I'm only planning on running 5 psi to keep from overworking my stock internals. If this is too modest, i don't really care, i have to drive this thing to work. I'm looking for mild performance and reliability.