Does raising idle rpm with a tuner make car faster?

[chaosflux]

I have a Dodge Challenger RT with a stock idle of 750 rpm. I used a diablo tuner to raise it to 1,200 rpm. It made the car more difficult to stop in stop and go traffic, so I lowered it back to stock idle rpm.

Does raising idle rpm make the car faster from a stop or was it all psychological?

[mikel]

no...idle speed has no effect on performance