I have seen this on a few posts. Can someone explain what is exactly means.

For example having all 34 deg in by 3000rpm. Does that basically mean having a pretty close flat spark advance table? For a MAF car would you edit all the spark advance tables to have say from 26-34 spark adavnce in all tables from 800rpm to 3000rpm?

Would that apply to all loads or just cruise loads?

Just picking numbers here...

Say your running 36d of timing at 50 K/Pa, and then ramp the timing down to 26d, at 100 K/Pa. Rather then dropping the timing at linear rate from 36 to 26, to ramp the timing down quicker.

36 34 32 30 28 26

ramping the timing down quicker would be.

36 33 28 27 27 26

Thanks Grumpy that explains it very well awesome.