I just bought a 99 z-28 http://www.ls1tech.com/forums/showthread.php?t=952975 I was wondering a few things about it. I am new to the V8 world and not sure about tuning and how much it will hold. Any suggestions? This car wasn't tuned for nitrous either. I am wondering what else I need. Maybe something to retard the timing when I use the nitrous.