if your just throwing on a turbo with stock everything, and a 13b turbo from a DSM, i would say about 2-3psi max without engine management/bigger injectors/ fuel pump, intercooler, etc.etc.etc.

i have a pretty extensive setup for having stock internals still, and i am running btwn 8-9 psi on a (T3 Super 60). once i get my ignition end of it figured out, i will probably push 10psi, but thats it until i get my internals installed. i have a wideband, emanage, and a second boost rail on top of stock injectors.. i can also see if im rich or lean, realtime via wideband display, and even tho im dumping plenty of fuel i make sure it doesnt get near a lean point...

ya ur CAI, and your exhaust wont matter how much boost you can run.. lolllzz.

if your buddy is wanting to know how much boost a tiburon can hold with a beefed up turbo kit and a decompression plate, and still hold its own. Tim, from speedfactor ran 17psi on stock internals with a T3/T4 turbo.