Ive been doing performance stuff for quite some time. But most of that was carburetors and stuff so I know the basics of tuning. My last hotrod was a 64 Nova with a 13:1 383 and a bigshot plate system, this was years ago though. I sold that engine back when LS engines were still a pretty new thing. I just recently picked up a 04 Silverado 2500 with the LQ4. After looking into everything and contacting one of my local tuners, Im thinking about buying HP Tuners and giving it a crack myself. What are the computer requirements for HP Tuners? Im an Apple guy (dont hold that against me) so Im pretty sure ill need to purchase a Windows machine only to be used for tuning. How difficult of a learning curve is there with using HP Tuners? Are there any good YouTubers who discuss the basics of using the software?