1zz Throttle body review/tips

[tk-421]

I also did this mod and recommend it for sure. I had to modify the OEM hose slightly by removing a very thin layer of rubber with a dremel. No biggie and worked like a charm and did a coolant bypass with a copper joint.

I also have a high idle for around 60 sec or so. I've had it that way for many years and I've had zero problems, FWIW.

@HANZO_187: There's a couple of very good threads about this info. Just keep in mind that some 1zz tb's work without having to swap chips (located at the base), while others apparently require it. I did it in about 10 min (maybe less) by using a drill with a very narrow bit (so that it only destroys the rivets and nothing else). HTH