Low MAP reading?

[zigspeed10]

I just installed MAFT Pro running speed density. MAP is reading 89.5 with key on and 17 at idle. I think these are low, I've tried multiple vac sources with the same results. Boost guage reads 20-21 in Hg at idle so I'm pulling good vac. I am trying to confirm these are low before I buy a new MAP sensor. Thanks

 

[Nick M]

You might try the piggy back SME section. Vacuum is perfect.