3rd gen 1zz tb swap

[why?]

The 1zz is starting to sound like more trouble than it could possible be worth. What are the benefits of it exactly?

I have a k&n air intake, lightweight flywheel, aftermarket clutch, NST pulley set with 10% underdrive pulley, lightweight wheels and tires.

My cold idle is high for my taste, but the warm idle is rock solid at 700 rpms.

[tooter]

Originally Posted by why?

The 1zz is starting to sound like more trouble than it could possible be worth.

That all depends on how it is set up.

I haven't touched mine in the 3 months since I turned down the idle screw. There have been zero issues since then, and this is my wife's daily driver. Throttle response is excellent with absolutely no loss in drivability.

What are the benefits of it exactly?

The exact benefits are quantified in the difference between the blue stock 1NZ throttle body line and the green 1ZZ throttle body line.