A few modifications are required to prep the engine for boost and higher air mass flow rates. The factory injectors were upgraded to Grams 550cc units to deliver more fuel. The factory fuel pump is good for 300 HP so it will be retained for now.
The factory positive crankcase ventilation (PCV) system does not deal well with boost. The inlet manifold dynamic chamber needed to come of which turned out to be a big job in itself. The hose between the PCV valve and the dynamic chamber was removed and the dynamic chamber end capped. A Moroso exhaust venturi and check valve were installed immediately downstream of the catalytic converter to create a vacuum and the PCV valve connected to the check valve.
