Idle creeping to 2K

[Nixon1]

But there shouldn't be anything wrong with the speed density system unless the Manifold Absolute Pressure sensor is shot, or the vacuum line to it is bad....or there are other fried intake sensors that the computer uses for input. True, the MAP tables will only support up to certain flow numbers and horsepower numbers, but those numbers should be fairly high and not a problem for street cars... But I do agree that SD isn't good for nitrous..once the horsepower gets up there, the charts the computer uses just can't sustain power...it'd probably start throwing the AF ratios out of whack..I assume to the lean side but I could be wrong.