[obzidian]

I your truck didn't come with one, i would suggest that you atleast get a boost gauge, and some sort of afr gauge, a wideband is what i would get hands down.

This way, you see how your blower is work and if the afr is correct or safe. For example, let say you change its onlr religiously, however, develop a condition where you having a boost leak. Boost leak first be apparant with the boost gauge as you will notice right away. Also, if you are leaking boost or air, than you will be over fueling your motor.... bad! Also, say goes the opposite way and you have a lean condition... bad as well.