I don't normally do turbo anything.
I will say.......
What is your altitude (high like Denver will yield lower numbers compared to sea level)?
What dyno? Some read higher or lower than others.
What is the calibration on THAT dyno? There are MANY things that can affect the final readings.
What is your fuel? Arizona, California and Nevada tend to suck (part of why COBB has ACN maps for their AP). Summer fuel vs. winter fuel (NY metro is an example) makes a difference.
To me, a dyno is fine for "before/after" mod runs. Basically, I had this, dyno said this, did that, dyno said that.
Compare to others (sorta) from the same dyno.
Do NOT compare to ANY other dyno in any other location.