It's different for every set up. Even the same set up in different vehicles will not have an identical, optimal pre-boost setting. Most vehicles with stock injectors/delivery valves/turbo will need some pre-boost.Is it safe to say that a smoke screw that is adjusted away from the diaphragm is not the optimal fueling to ignite the turbo at its earliest point.
Yes. Make sure you hold the pre-boost screw steady while tightening the nut, otherwise as you tighten the nut, it will also tighten the pre-boost screw.In attempt to dial in my smoke screw, I assume the best method is to just lightly touch the screw to the diaphragm and then start with small 1/2 turn adjustments inward against the diaphragm?
The star wheel adjustment does not effect pre-boost fuel settings/adjustments. They are independent of each other. If you are smoking heavily before the turbo lights, you have too much pre-boost fuel. If your turbo lights well with a haze and then begins puking smoke (considering you have no fuel plate), your afc spring does not have enough tension on it. It should either be tightened up or replaced with a stiffer (and longer) spring.Where should the starwheel tension be during smoke screw adjustment to best identify the results of tuning the smoke screw?