Bought a supercharger, now what?

OP I made a mistake, I mean bought the truck at 140K. Engine management made it go from having to avoid boost at all times, to being able to enjoy it.

 

He's installing it on someone else's '99.

 

I know I'm late to the party but If I had to do it again I would do a good cat back exhaust, URD 7th injector, a boost gauge (so you can feel cool about the boost you make), and a tune on a dyno. An AFR is also a good idea but most people just have it as a reference and aren't going to adjust based on readings.

Just my 2 cents. I have had a supercharger since my truck was basically new and did my mods gradually. I only tuned it on a dyno recently and that only added a few ponies but was the largest improvement as far a drivability goes.

 

Bueno!