Originally Posted by fastrt

thanks,. Its built for healthy shot, and or 20 psi. I gotta let it breathe first. I need to open the y-pipe back to a 3.5" and get an idea on what I want to do cutout wise. a single 3" is choking this LS1. What headers do you run? how do you like the pro flow?

what timing, and target afr are u getting on your 150 shot? My 5.3 liked 25* and a 12.0-11.8 afr on 100 shot. I ran 28* n/a. I am going to start small and work up to a 200....test the waters.