Quote:
Originally Posted by madcap
It has happened at a constant RPM. I've accelerated slowly and held a near consistent RPM around 2800 and I've had it feel just like a switch was flipped on and the car instantly delivers more power, but only the first time I accelerate after starting the engine.
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Interesting, I definitely think it's the car coming up to temp and lighting off the cats, it's well known that most cars run in a "choke" mode until they're up to temp, until then they don't deliver as much power. You can see it when you first start up the car will idle at around 1,000 rpms instead of ~650.
[ame="http://en.wikipedia.org/wiki/Choke_valve"]Choke valve - Wikipedia, the free encyclopedia[/ame]