Sacrilege!
.
I do know what you mean by it having little M badges everywhere already but to those that know you will look like a fool that is "trying too hard".
And it takes more than just an engine tune to make a real "M car", you can boost an N55 so it can out-drag a stock M3 for a block or two but comes the first corner it will be a very different story.
The X1 is a great handling car and it will leave almost all others SUV/CUV behind in the corners but its still nowhere even a "lowly" 1M (trust me on this one, I have first hand knowledge
)