68 camaro 5.3 with whipple sidemount supercharger

[Lextech]

How do I get into COS3?

Here is your tune converted to "04073003". Which is a 2004 COS3. It is set up as a 5.3, M/T, DBW---STARTER TUNE. I set the MAP scaler to 190 for a 2bar MAP sensor. If you use a different MAP Sensor you will need to scale table C6301 accordingly. I scaled up table A0009 by 35%----Just as a starting point. You will need to input your injector data into the tune when you get your new injectors. You will need to "Full Flash" this calibration into your PCM when you are ready. You will need a good Wide Band O2 Sensor to input into your tuning logs. You should be spending a LOT of time on the EFILive forum in the Gen3 and Forced Induction Sections as well as studying the tutorials.
Jeff