Should be helpful:

I plotted the pressure and voltage using a vacuum pump, these are the
numbers I gathered:

Sea Level (101kpa) 2.93V
-10kpa (90kpa) 2.66V
-20kpa (80kpa) 2.38V
-30kpa (70kpa) 2.11V
-40kpa (60kpa) 1.83V
-50kpa (50kpa) 1.56V
-60kpa (40kpa) 1.29V
-70kpa (30kpa) 1.00V
-80kpa (20kpa) 0.72V
-90kpa (10kpa) 0.44V

I did not record lower than 10kpa because that was the limit of the
vacuum pump and I did not record pressure above (boost) because I
won't be using a turbo.

Not all MAP sensors are linear going into boost (+PSI) but within my
usable range the data is linear, so I extrapolated the line out to 5V
and 0V, this is what I will use for microsquirt.

176 kpa 5V
-0.5 kpa 0V

Started engine with Microsquirt V3.

Looks like valva clearance need to be checked because do anything else. I have Kent Cams and possible it is fine with this cams, but maybe someone give an advice.

Video: http://www.youtube.com/watch?v=0Unn7vSK ... e=youtu.be

BTW: Why "youtube" BBcode doesn't work ?