Hi guys, I've just booked in my FG xr6t for some small mods which will hopefully make the car sound a bit better with some extra power. I'm getting; 60 pound injectors stronger intercooler piping 4" dump and cat with a 3.5" catback. Xforce S/S and of course a tune Any other suggestions, and what would be next. Should I worry about a new air filter or C.A.I? What power can I expect from these mods, apparently it will be tuned to 16PSI