Gas burned per minute spent idling figures?

[serialk11r]

Originally Posted by NeilBlanchard

Well, that is here in New England in the winter, and so I probably had the fan blowing and maybe the rear defroster on. I also have the cold air intake from Toyota on my car.

I have tried to see what a cold start is, and I think it is ~0.51-0.55GPH until the temperature tops ~125-130F?

Yea those things will do that, my 1ZZ-FE and 2ZZ-GE were both around 0.18GPH fully warmed up, zero accessory load, with much more displacement than your 1NZ-FE.

The high cold start makes sense since older engines tend to keep the revs really high on a cold start. I noticed newer cars will settle to 900-1200rpm quickly even if it's freezing cold, whereas older cars will target 1500-1900rpm. I'm guessing better combustion chamber design allows much more ignition timing retard on higher throttle opening leading to more efficient catalyst warm up.