Rev limiter on idle?

luckbox

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May 8, 2014
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I was cruising the other day and stopped to show the car to a friend. He wanted me to show how the car sounds when reving on stand still idle. The first time I tried I could rev freely all the way through, as the rpm's went back down and I tried it again the car limited itself to 4000rpm. I left and drove for a while and tested again and same thing happens, car revs freely giving throttle first time but the second time even though I'm pressing the pedal all the way down the revs don't get higher than 4000rpm. Is this some kind of launch control thing in the remap or is there another reason for this? Car is running Stage2+ APR software.