I put an 03 5.3 from a Silverado into a something else. I bought the Magnuson tvs 1900 supercharger kit for the engine. Apparently Magnuson doesn't include tunes with the kit anymore, found that out after delivery of the supercharger. From a little research, the tune that they did supply, was a little funky, as far as the way they did things. I would like to start from the trucks base tune, and build from there. I guess what I'm asking is, where do I start. I'm guessing that at the very least, I need to go 2 bar along with the appropriate map sensor. Kinda lost, or intimidated from there. Any pointers would be appreciated. A little background. I tuned my 5.3 that I put into a 300zx, but that was n/a. Maybe I'm making more out of this than I need to.