Timing and rpm engine theory

[hpfiend]

Hey all-

What is the advantage/disadvantage to bringing timing in with increasing rpm versus bringing it all in at once? Other than starting issues why don't cars come from the factory with locked timing or better yet full advance from 1000 rpm to redline to help starting? Is it a longevity issue???? It seems like a lot of wasted engineering between vacuum advance and mechanical advance to just throw out the window as I am being instructed to do.

[accel_is_my_drug]

http://www.filecrop.com/a-graham-bell-4-stroke-Performance-Tuning.html

 

http://ecuhacking.activeboard.com/t14863888/ecu-engine-tuning-theory-and-application/

[Cordell]

You got a little back story to this series of questions?

 

Most cars run better with more timing under vacuum, and of course more then base timing when under load. If you look at it as a table in a computer controled car it isn't much different as this provides good effiency and even power output from the engine. A computer doesn't really have a base timing, just a seperate table for cranking advance, and then the main tables for when the engine is running.

[Mattsv8]

I run the s10 locked at 38 and pull for boost. Blazer has locked timing either one could add a vacume can and add more at part throttle.