Originally Posted by scottmcphee

This kills me.

You guys all know that it depends on engine load as to when is the best point in time to inject. The fact that we have to set timing to "one point", because it's mechanical, and it's fixed... is a compromise. Finding "the exact point" using any method is still a compromise. Modern diesels adjust injection timing under all kinds of conditions, and even adjust how many and when to inject micro bursts during the same stroke. We're stuck with one lump of fuel going in at a given piston position, no matter what..

All manuals and methods and precision aside... find a timing point that you like. For your climate, your altitude, your style of driving, your fuel efficiency desires, your power needs, startability, the condition of your timing chain slack, quality of injectors, etc... and just drive it and enjoy it. If your conditions change, give tilt the IP a degree or two either way... did it improve? Make it worse? Test and try again.

Personally, I'm set for a preference toward mid to upper power range, when boost is 30% or more. That's where I want my injection to respond.