Std fuel pin turned clockwise a little bit at a time you are happy with the smoke is the way to go, simple and er free!
Ive always thought the problem with the fuel pins is they just dump way to much fuel in regardless of boost pressure which you can achieve by just rotating the std pin to its max depth, now if you are a yank and want to go around rolling coal thats great but I always think a well tuned diesel engine should make very little smoke until on boost then make no visible smoke at all.
I also think its another arrow in bow of the anti 4x4 brigade if they can say they all belch black smoke.
If you watch some of the diesel tractor pulling some roll coal something terrible, but a select few scream their tits off with virtually no smoke and just sound awesome.
Im waiting for someone to try the fuel pin or the boost ring on a 200 with a vgt now I reckon that would be a bit of a weapon.