Was wondering where the idle adjustment is on the 1jz. mine wants to idle at about 300 rpm which is "slightly" to low! Unless it gets a boost leak from blowing a vacuum hose from pumping too much boost through, then it idles fine.... The throttle body has a few adjustments on it. Any ideas?

you could check the idle speed control valve. as far as the throttle body goes i have an extra one and i dont see any ajustments except on the tps.

On my 91 type r supra i just adjust it with a 10mm wrench and allen key near the front passangers side of the engine. it takes a couple minutes and i like to adjust it depending on how it is running. cheers!