I had a ride in Andrews car....i liked it alot haha, what is like the max output of a TRD charger? With supporting mods, like headers, fuel upgrade, ECU etc etc Without working the engine and just doing the Fuel system (rails, pump/regulator etc + adding return line) and a piggyback ecu (minimum) you can put a 5.5psi pulley on it and run around 200kW. In terms of CAI/headers/catback they don't do much in the grand scheme. You'll get more output from more boost. For reference, I'm running 4psi with no fuel or ECU mod in a car that's 150kg heavier than yours. edit: Trent, only 30hp more but a poo-load more torque.