This
Corolla ad has it
I now have that camry chicken ad in my head haha
It's just people that put the car in gear the millisecond it starts that annoy me. Anyway, cars now barely flare on startup at all - really noticeable over the past few years. Eg, 2003 Corolla revs at 2100 at startup, but 2010 Aurion V6 - rarely over 1400, and straight down to 1200.
With regard to the adjustments - usually that is idle mixture - shouldn't make a difference majorly.
What you can do as well, is start the engine, drive 10 minutes and then idle for 5-10, and see if the plugs are vastly different (rich or lean) to the other driving/no end idle plug colour check. Helps see if idle is rich, meaning wasted fuel and possibly fouled plugs causing lackluster performance
