* I DIDN'T MEAN LITERAL 4 STROKE, I MEANT THE FIRING ORDER IS LIKE 1, 3, 2, 4, OR WHATEVER.. Rather than the normal 14, 23 firing order. :3
Also glow plugs are heated by passing large amounts of current through them. Yet again that may not be true.
A 4 stroke I4 engine would be smooth but underpowered at low RPM. And a turbo does not clean the smoke, that would be a catalytic converter; a turbo sucks air from outside the engine into the engine for better output. (To my knowlage I don't know too much about turbos.)
dont remember turbos turning smoke into oxygen but its unique 1+