Anyone have specs on the stock ignition timing maps, both part throttle and full load they can post?

 

I have mine in my Link, but I am not sure thats what you want.

 

Ask and ye shall receive (courtesy of our fellow 'lister Rob):

 

Whats on the x axis? MAP? I dont get the % though...

 

Load. Can be seen as an approximation of MAP. More correctly I guess it would be mass of air in the cylinder.

 

x-axis is RPM

 

Russ,

Could I have the timing and fuel maps for a 500bhp with K26/8

 

Since his talking about % I reckon NZ is talking about the y-axis?

 

My guess would be that the Y-axis is throttle position (TPS) and believe that it uses a different map above 60%.

 

Exactly what I was looking for...Thanks very much

 

No Laust, the DME doesnt have TPS info so that's impossible.
I'm quite positive it's what Bosch calls load which basically should be air flow/rpm.

 

Thomas, OK I primed my post with "guess" since I knew I was on thin ice, but how come the "load" only goes to 60% here?

 

Over %60 load would have to be one of the triggers for transitioning from the PT map to the full throttle map.

 

These are good questions. I know for a fact that the DME chip will use the "full load maps" if and only if throttle is more than 65 degrees open, according to factory manuals. The %s are definately load percents, I am currently trying to convert these numbers to psi but it is difficult. They appear to be arbitrary numbers derived from airflow (per afm) per rpm.

 

Yes I meant y axis.

FWIW my timing is much more aggressive than that map. But I cant tell the load and how to compare it.