looking for a shop that can dyno whipped 509s efis for marine in northern Maryland or central Pa....anybody know of one...my motors are all together and ready to go, but keep thinking I should dyno them first before I put them in, what does everyone think?

Dean Nickerson.

Where's his shop at BB?

Bristol pa 19007

There is a guy in South Jersey who everyone down here seems to use, can't remember his name.

It's important you find a place that is skilled with blown FI marine setups twcar. Just in case the tune is not right on and needs adjusting.