I don't P&G all too consistently, but I usually don't until the engine is at least running warm. I don't have a number (stock temp gauge is horribly inaccurate), but my engine runs a LOT better when warm. I imagine it has to do with fuel vaporization, but tolerances closing up probably have a small effect.I doubt it takes more than a minute for my HAI to warm up, because it is coming from a heat shield on the exhaust.
I know that didn't answer your question, but usually I wait till I "know" it is warm enough to run better. Probably that means closed loop, but I don't have a way to monitor that.
Last edited by usergone; 11-02-2010 at 02:49 PM..
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