I'm new here & looking for advice. I used to use EFILive a little but sold it due to lack of help. I'm getting close to wrapping up my 5.3 Fox body build & have some questions about how to get this thing to light up right away. The engine is a completely stock 5.3 out of a 2001 Silverado. I have absolutely no emissions equipment on the car. The only changes I really made are the stock LS1 intake & 98 LS1 injectors. I'm going to use the truck MAF also. What changes need made to fire the car up? I ordered a standalone harness from a sponsor on LS1Tech & am borrowing HPTuners from a guy I know. The PCM is the 411 type from the 01 Silverado. If I like HP Tuners better than the other software that I previously had, I plan on buying the Pro & learning what I can.