I need some help from some of the experts on here. In 2008 I put twins on my 2005 V (LS6 with 317 heads) and the stock short block didn't last very long. I just finished putting together a forged 383, PRC stage 2.5 LS6 heads and a Comp Cam (228 I, 232 E duration .588 I .595 E lift, 114 LSA), 80 lb Siemens injectors, stock LS6 intake and ported stock throttle body. I added a 2 BAR MAP and threw together a base tune to get it started. It ran decent but was pig rich and had a slight stumble on throttle tip in. I went with a COS and that is when my troubles started. It will try to start but won't ever kick off and run. I flashed the initial start tune in again and it fired off and ran.
Please someone who is more of an expert than myself HELP!!!
Attached is my initial start tune and the COS tune.
Initial start up 110723.tunCOS 110724.tun