What is the Autocorrelation of the Impulse Response if the Magnitude of Frequency Response is >1 So by the DTFT pairs, if the magnitude of the frequency response of a signal is 1, then the autocorrelation is the Kroneker Delta Function.

What if I find that the magnitude of the frequency response of the system is greater than one?

Is the autocorrelation just the constant multiplied by the Kroneker Delta Function?
Make sure not to confuse the power spectral density (PSD) with the frequency response. 


PSD is the Fourier transform of the autocorrelation function. 
Frequency response is the Fourier transform of impulse response.


That aside, your question is about the Fourier transform of a constant $c$.
Since $$\mathcal{F}\{1\}=\delta(\omega),$$
considering linearity of the Fourier transform we have $$\mathcal{F}\{(c)1)\}=(c)\delta(\omega)$$