How do you adjust the amount of retard your pulling per pound of boost? do you hook up a laptop, or use a handheld?

A 3 bar map sensor is good for 30lbs of boost as you probably already know. Simple thing to check is does the graph or scale for the retard read 0-30 or does it read 0-45....

If it reads to 45 than like I said in the earlier post, 15.7 is really 1 pound. Make sure you check that out first.