wait wait wait! can we all hold on for a second...

hoofajab, you have a 1bar map sensor...

this reads upto 1bar ABSOLUTE (which is nornmal atmospheric pressure)

this CANNOT read boost

a 2bar MAP sensor reads upto 2bar absolute (1bar boost)

you dont have one of those...

so sorry, you can't do it ai'm afraid.

also i beleive the standard map sensor on the DOHC is frequency based not voltage based, so you'd need an oscilloscope to read it anyway!