its fixed yaaa ,thanks.
well its finally fixed !all the stupid sht ive tried fixing and all the damn parts ive replaced,and all the threads ive written up ,it was the danm injectors .they were pissing like a race horse.just wanted too say thanks for all the opinions and help especially redheartbeat ,youve ben a tremendous amount of help.and all others that helped diagnose this stupid issue.iwasnt sure if it was inj,, because it was first going lean then going super rich.so it had me confused .it must have first been clogged then blew out .my left bank was all cold on the headers .100 degres diff,from driver side .well what a lesson learned .thanks again guys.
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .