Your vacuum hose routing is fine.
Your TPS is probably fine, but I'd like to know what the voltage is at idle when it warms up, and the idle increases. I'd also like to know what the voltage is at WOT.
Have you tried unplugging the ECT sensor?
The IAC usually will kill the engine when it's unplugged if the engine is cold. Once warmed up, it doesn't usually have as dramatic an effect. Yours is operating the opposite. When warm, and the idle is high, unplugging the IAC kills the engine, but cold, when the idle speed is normal, unplugging it doesn't effect the idle, right? That means the engine is getting air from another source when cold, but that source closes, and the engine relies on the IAC when warm, and it's allowing too much air. Hmmm.
Is the EGR valve still in place?
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