Then youre probably gonna pull your engine again to install upgraded manifolds after you compare your dyno graph to a graph for a Z that used upgraded manis. Youre also gonna want to get upgraded intercoolers with 2.5" ins and outs, too, if you upgrade to 2.5" piping. But then the expenses dont stop there: you'll want bigger throttle bodies, which will require port matching your intake manifold. Then all that newly acquired power will require a stronger clutch. Do you now have enough fuel to match all that air you'll be forcing down your intake? Yeah, plan for bigger injectors. Bigger brakes? Maybe a Selin Translator to compliment the dual intakes you'll want....
