Internal vs External MAP sensor
 

Purchased an FC with a Haltech Sprint RE installed with no external MAP sensor hooked up.
While redoing the interior and upgrading the turbo setup I found that the internal MAP as well as the TPS are currently hooked up.

I'm wondering if there's a benefit to utilizing an external MAP sensor or if there's a specific way I should sheck to be sure that the internal sensor will read properly with the new setup.