This might seem like a crazy question, but i was wondering if you can actually tune an engine to make it lope. I love the sound and actually tuned my duramax to lope at an idle and it is kinda fun playing around with

I think it would be difficult on a gas engine as the only way i could see doing it was by varying the throttle position, so it would need ETC. Or you could have it idle rich and rev up then maybe somehow lean it out... I thought it would be kinda cool if i could make the engine lope with out changing the cam. Any ideas?