According to http://www.startekinfo.com/StarTek/outside/12264/Program/Engine/602_603/07.1-0010.pdf,

* Improved cold start
* More favourable air/fuel blending as a result of shorter glow plug in combination with recess and concave in the ball pin
* Particle reduction and improvement in hydrocarbons and carbon monoxide.

I hear inclined injection bends rods

Sixto
MB-less