fail, you didnt scan timing? We are suppose to troubleshoot timing issues without a scan of timing?
Your spark system is in limp home mode for some reason or another... cam sensor, crank sensor, or knock sensors... The problem likelyhood is in that order.
TOGs//Stge III ZZP Blower//LS1 tb// 85 maf//XP cam //105lb spings//3" Dp& high flowcat//3.2",3.0"
Ud plly//Msd wires//Aut 103's//CAI//ZZ PCM//ZZ P shift kit//42.5lb. 13.3@104MPH DEC 08