Jay
I'm not sure where the best sound of the motor would come from, but let me throw something out.
You want the best place that
ELIMINATES any sound other that the motor. Therefore, it must not be subjected to wind noise. Thats the biggest offender. The second biggest offender are the idiots that add some stupid record to the video. I hate those guys.
But I digress.
Therefore, best places could be ...
under the dash
behind the windshield by the rear view mirror
inside the glove compartment
in the trunk.
I'm wondering what it would sound like if you attached the remote mic to the side exhaust, close to the exit. Might be nice ... probably not.
If you were to put it in the engine compartment, I'd make sure it was fastened securely ... lots of hot stuff to melt a microphone.
I'm waiting for your first video, even if its snowing outside